51552402 has 32 divisors (see below), whose sum is σ = 112852224. Its totient is φ = 15570000.

The previous prime is 51552383. The next prime is 51552419. The reversal of 51552402 is 20425515.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21777 + ... + 24027.

It is an arithmetic number, because the mean of its divisors is an integer number (3526632).

Almost surely, 2^51552402 is an apocalyptic number.

51552402 is an abundant number, since it is smaller than the sum of its proper divisors (61299822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51552402 is a wasteful number, since it uses less digits than its factorization.

51552402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2614.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 51552402 is about 7180.0001392758. Note that the first 3 decimals coincide. The cubic root of 51552402 is about 372.1770893455.

Adding to 51552402 its reverse (20425515), we get a palindrome (71977917).

It can be divided in two parts, 5155 and 2402, that added together give a palindrome (7557).

The spelling of 51552402 in words is "fifty-one million, five hundred fifty-two thousand, four hundred two".