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145337071 = 117122621
BaseRepresentation
bin10001010100110…
…10101011101111
3101010110212222111
420222122223233
5244201241241
622231024451
73413226145
oct1052325357
9333425874
10145337071
1175047990
124080b127
1324158689
1415433595
15cb5cc81
hex8a9aaef

145337071 has 12 divisors (see below), whose sum is σ = 160875432. Its totient is φ = 130214000.

The previous prime is 145337053. The next prime is 145337117. The reversal of 145337071 is 170733541.

It is not a de Polignac number, because 145337071 - 25 = 145337039 is a prime.

It is a super-2 number, since 2×1453370712 = 42245728413718082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145337051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54141 + ... + 56761.

It is an arithmetic number, because the mean of its divisors is an integer number (13406286).

Almost surely, 2145337071 is an apocalyptic number.

145337071 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145337071 is a deficient number, since it is larger than the sum of its proper divisors (15538361).

145337071 is an equidigital number, since it uses as much as digits as its factorization.

145337071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2774 (or 2703 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 145337071 is about 12055.5825657660. The cubic root of 145337071 is about 525.7655600567.

The spelling of 145337071 in words is "one hundred forty-five million, three hundred thirty-seven thousand, seventy-one".

Divisors: 1 11 71 781 2621 5041 28831 55451 186091 2047001 13212461 145337071