51452532444 has 24 divisors (see below), whose sum is σ = 125275731840. Its totient is φ = 16405155184.

The previous prime is 51452532431. The next prime is 51452532457. The reversal of 51452532444 is 44423525415.

It is an interprime number because it is at equal distance from previous prime (51452532431) and next prime (51452532457).

It is a super-2 number, since 2×51452532444² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93210834 + ... + 93211385.

It is an arithmetic number, because the mean of its divisors is an integer number (5219822160).

Almost surely, 2^51452532444 is an apocalyptic number.

It is an amenable number.

51452532444 is an abundant number, since it is smaller than the sum of its proper divisors (73823199396).

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

51452532444 is a wasteful number, since it uses less digits than its factorization.

51452532444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186422249 (or 186422247 counting only the distinct ones).

The product of its digits is 384000, while the sum is 39.

The spelling of 51452532444 in words is "fifty-one billion, four hundred fifty-two million, five hundred thirty-two thousand, four hundred forty-four".