51252502 has 8 divisors (see below), whose sum is σ = 87861456. Its totient is φ = 21965352.

The previous prime is 51252469. The next prime is 51252527. The reversal of 51252502 is 20525215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51252502² = 5253637922520008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1830433 + ... + 1830460.

It is an arithmetic number, because the mean of its divisors is an integer number (10982682).

Almost surely, 2^51252502 is an apocalyptic number.

51252502 is a deficient number, since it is larger than the sum of its proper divisors (36608954).

51252502 is a wasteful number, since it uses less digits than its factorization.

51252502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3660902.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 51252502 is about 7159.0852767655. The cubic root of 51252502 is about 371.4539866097.

Adding to 51252502 its reverse (20525215), we get a palindrome (71777717).

The spelling of 51252502 in words is "fifty-one million, two hundred fifty-two thousand, five hundred two".