51701587 has 8 divisors (see below), whose sum is σ = 60056672. Its totient is φ = 43588800.

The previous prime is 51701581. The next prime is 51701621. The reversal of 51701587 is 78510715.

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 51701587 - 2¹⁵ = 51668819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51701581) 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, 60114 + ... + 60967.

It is an arithmetic number, because the mean of its divisors is an integer number (7507084).

Almost surely, 2^51701587 is an apocalyptic number.

51701587 is a deficient number, since it is larger than the sum of its proper divisors (8355085).

51701587 is a wasteful number, since it uses less digits than its factorization.

51701587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121149.

The product of its (nonzero) digits is 9800, while the sum is 34.

The square root of 51701587 is about 7190.3815615028. The cubic root of 51701587 is about 372.5357520149.

The spelling of 51701587 in words is "fifty-one million, seven hundred one thousand, five hundred eighty-seven".