51553012 has 24 divisors (see below), whose sum is σ = 103259520. Its totient is φ = 22061280.

The previous prime is 51553009. The next prime is 51553013. The reversal of 51553012 is 21035515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51553013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32289 + ... + 33847.

It is an arithmetic number, because the mean of its divisors is an integer number (4302480).

Almost surely, 2^51553012 is an apocalyptic number.

It is an amenable number.

51553012 is an abundant number, since it is smaller than the sum of its proper divisors (51706508).

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

51553012 is a wasteful number, since it uses less digits than its factorization.

51553012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751 (or 2749 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 51553012 is about 7180.0426182579. The cubic root of 51553012 is about 372.1785572831.

Adding to 51553012 its reverse (21035515), we get a palindrome (72588527).

The spelling of 51553012 in words is "fifty-one million, five hundred fifty-three thousand, twelve".