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51153157 = 117165497
BaseRepresentation
bin1100001100100…
…0100100000101
310120020211221101
43003020210011
5101043400112
65024220101
71160536366
oct303104405
9116224841
1051153157
1126969140
121516a631
13a7a0253
146b17b6d
154756757
hex30c8905

51153157 has 8 divisors (see below), whose sum is σ = 56590272. Its totient is φ = 45847200.

The previous prime is 51153107. The next prime is 51153161. The reversal of 51153157 is 75135115.

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 51153157 - 27 = 51153029 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 (51153107) 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, 31968 + ... + 33529.

It is an arithmetic number, because the mean of its divisors is an integer number (7073784).

Almost surely, 251153157 is an apocalyptic number.

It is an amenable number.

51153157 is a deficient number, since it is larger than the sum of its proper divisors (5437115).

51153157 is a wasteful number, since it uses less digits than its factorization.

51153157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65579.

The product of its digits is 2625, while the sum is 28.

The square root of 51153157 is about 7152.1435248462. The cubic root of 51153157 is about 371.2138294561.

The spelling of 51153157 in words is "fifty-one million, one hundred fifty-three thousand, one hundred fifty-seven".

Divisors: 1 11 71 781 65497 720467 4650287 51153157