51522512 has 20 divisors (see below), whose sum is σ = 105697476. Its totient is φ = 24245760.

The previous prime is 51522511. The next prime is 51522587. The reversal of 51522512 is 21522515.

It can be written as a sum of positive squares in 2 ways, for example, as 47665216 + 3857296 = 6904^2 + 1964^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51522511) by changing a digit.

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, 94439 + ... + 94982.

Almost surely, 2^51522512 is an apocalyptic number.

It is an amenable number.

51522512 is an abundant number, since it is smaller than the sum of its proper divisors (54174964).

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

51522512 is a wasteful number, since it uses less digits than its factorization.

51522512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189446 (or 189440 counting only the distinct ones).

The product of its digits is 1000, while the sum is 23.

The square root of 51522512 is about 7177.9183611964. The cubic root of 51522512 is about 372.1051462131.

The spelling of 51522512 in words is "fifty-one million, five hundred twenty-two thousand, five hundred twelve".