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155110053 = 37191273061
BaseRepresentation
bin10010011111011…
…00101010100101
3101210212101222210
421033230222211
5304202010203
623220314033
73562261620
oct1117545245
9353771883
10155110053
117a61252a
1243b42919
132619aac7
1416858db7
15d93d803
hex93ecaa5

155110053 has 32 divisors (see below), whose sum is σ = 250839040. Its totient is φ = 83280960.

The previous prime is 155110051. The next prime is 155110061. The reversal of 155110053 is 350011551.

It is not a de Polignac number, because 155110053 - 21 = 155110051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155110051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49143 + ... + 52203.

It is an arithmetic number, because the mean of its divisors is an integer number (7838720).

Almost surely, 2155110053 is an apocalyptic number.

It is an amenable number.

155110053 is a deficient number, since it is larger than the sum of its proper divisors (95728987).

155110053 is a wasteful number, since it uses less digits than its factorization.

155110053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3217.

The product of its (nonzero) digits is 375, while the sum is 21.

The square root of 155110053 is about 12454.3186485652. The cubic root of 155110053 is about 537.2956387696.

The spelling of 155110053 in words is "one hundred fifty-five million, one hundred ten thousand, fifty-three".

Divisors: 1 3 7 19 21 57 127 133 381 399 889 2413 2667 3061 7239 9183 16891 21427 50673 58159 64281 174477 388747 407113 1166241 1221339 2721229 7386193 8163687 22158579 51703351 155110053