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155131141 = 1182717053
BaseRepresentation
bin10010011111100…
…01110100000101
3101210220110220211
421033301310011
5304203144031
623220555421
73562410244
oct1117616405
9353813824
10155131141
117a627360
1243b52b71
13261a7599
141686295b
15d944bb1
hex93f1d05

155131141 has 8 divisors (see below), whose sum is σ = 169448544. Its totient is φ = 140849520.

The previous prime is 155131133. The next prime is 155131147. The reversal of 155131141 is 141131551.

155131141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155131141 - 23 = 155131133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155131147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571 + ... + 17623.

It is an arithmetic number, because the mean of its divisors is an integer number (21181068).

Almost surely, 2155131141 is an apocalyptic number.

155131141 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

155131141 is a deficient number, since it is larger than the sum of its proper divisors (14317403).

155131141 is a wasteful number, since it uses less digits than its factorization.

155131141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17891.

The product of its digits is 300, while the sum is 22.

The square root of 155131141 is about 12455.1652337494. The cubic root of 155131141 is about 537.3199870238.

Adding to 155131141 its reverse (141131551), we get a palindrome (296262692).

The spelling of 155131141 in words is "one hundred fifty-five million, one hundred thirty-one thousand, one hundred forty-one".

Divisors: 1 11 827 9097 17053 187583 14102831 155131141