51392522 has 4 divisors (see below), whose sum is σ = 77088786. Its totient is φ = 25696260.

The previous prime is 51392507. The next prime is 51392531. The reversal of 51392522 is 22529315.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22529315 = 5 ⋅4505863.

It can be written as a sum of positive squares in only one way, i.e., 46936201 + 4456321 = 6851^2 + 2111^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12848129 + ... + 12848132.

Almost surely, 2^51392522 is an apocalyptic number.

51392522 is a deficient number, since it is larger than the sum of its proper divisors (25696264).

51392522 is a wasteful number, since it uses less digits than its factorization.

51392522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25696263.

The product of its digits is 5400, while the sum is 29.

The square root of 51392522 is about 7168.8577890763. The cubic root of 51392522 is about 371.7919453622.

The spelling of 51392522 in words is "fifty-one million, three hundred ninety-two thousand, five hundred twenty-two".