51006157 has 8 divisors (see below), whose sum is σ = 55059840. Its totient is φ = 47105520.

The previous prime is 51006143. The next prime is 51006181. The reversal of 51006157 is 75160015.

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 51006157 - 2¹⁵ = 50973389 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 (51006457) 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, 37569 + ... + 38902.

It is an arithmetic number, because the mean of its divisors is an integer number (6882480).

Almost surely, 2^51006157 is an apocalyptic number.

It is an amenable number.

51006157 is a deficient number, since it is larger than the sum of its proper divisors (4053683).

51006157 is a wasteful number, since it uses less digits than its factorization.

51006157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76523.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 51006157 is about 7141.8594917570. The cubic root of 51006157 is about 370.8578997262.

The spelling of 51006157 in words is "fifty-one million, six thousand, one hundred fifty-seven".