51502413 has 16 divisors (see below), whose sum is σ = 69806016. Its totient is φ = 33770880.

The previous prime is 51502411. The next prime is 51502447. The reversal of 51502413 is 31420515.

It is not a de Polignac number, because 51502413 - 2¹ = 51502411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51502413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51502411) 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, 98593 + ... + 99113.

It is an arithmetic number, because the mean of its divisors is an integer number (4362876).

Almost surely, 2^51502413 is an apocalyptic number.

It is an amenable number.

51502413 is a deficient number, since it is larger than the sum of its proper divisors (18303603).

51502413 is a wasteful number, since it uses less digits than its factorization.

51502413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 51502413 is about 7176.5181669107. The cubic root of 51502413 is about 372.0567536835.

Adding to 51502413 its reverse (31420515), we get a palindrome (82922928).

It can be divided in two parts, 51502 and 413, that added together give a palindrome (51915).

The spelling of 51502413 in words is "fifty-one million, five hundred two thousand, four hundred thirteen".