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64351157 = 1319614271
BaseRepresentation
bin1111010101111…
…0101110110101
311111002101012012
43311132232311
5112433214112
610215134005
71410655463
oct365365665
9144071165
1064351157
1133362a82
1219674305
1310441610
148791833
1559b2022
hex3d5ebb5

64351157 has 16 divisors (see below), whose sum is σ = 74161920. Its totient is φ = 55339200.

The previous prime is 64351153. The next prime is 64351211. The reversal of 64351157 is 75115346.

It is not a de Polignac number, because 64351157 - 22 = 64351153 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 (64351151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12932 + ... + 17202.

It is an arithmetic number, because the mean of its divisors is an integer number (4635120).

Almost surely, 264351157 is an apocalyptic number.

It is an amenable number.

64351157 is a deficient number, since it is larger than the sum of its proper divisors (9810763).

64351157 is a wasteful number, since it uses less digits than its factorization.

64351157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4364.

The product of its digits is 12600, while the sum is 32.

The square root of 64351157 is about 8021.9172895262. The cubic root of 64351157 is about 400.7302431345.

The spelling of 64351157 in words is "sixty-four million, three hundred fifty-one thousand, one hundred fifty-seven".

Divisors: 1 13 19 61 247 793 1159 4271 15067 55523 81149 260531 1054937 3386903 4950089 64351157