51351501 has 16 divisors (see below), whose sum is σ = 69638400. Its totient is φ = 33653568.

The previous prime is 51351499. The next prime is 51351527. The reversal of 51351501 is 10515315.

It is not a de Polignac number, because 51351501 - 2¹ = 51351499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51351551) 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, 91915 + ... + 92471.

It is an arithmetic number, because the mean of its divisors is an integer number (4352400).

Almost surely, 2^51351501 is an apocalyptic number.

It is an amenable number.

51351501 is a deficient number, since it is larger than the sum of its proper divisors (18286899).

51351501 is a wasteful number, since it uses less digits than its factorization.

51351501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028.

The product of its (nonzero) digits is 375, while the sum is 21.

The square root of 51351501 is about 7165.9961624327. The cubic root of 51351501 is about 371.6929988203.

Adding to 51351501 its reverse (10515315), we get a palindrome (61866816).

The spelling of 51351501 in words is "fifty-one million, three hundred fifty-one thousand, five hundred one".