51375552 has 28 divisors (see below), whose sum is σ = 135931656. Its totient is φ = 17125120.

The previous prime is 51375551. The next prime is 51375593. The reversal of 51375552 is 25557315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51375551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133599 + ... + 133982.

It is an arithmetic number, because the mean of its divisors is an integer number (4854702).

Almost surely, 2^51375552 is an apocalyptic number.

It is an amenable number.

51375552 is an abundant number, since it is smaller than the sum of its proper divisors (84556104).

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

51375552 is a wasteful number, since it uses less digits than its factorization.

51375552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267596 (or 267586 counting only the distinct ones).

The product of its digits is 26250, while the sum is 33.

The square root of 51375552 is about 7167.6740997342. The cubic root of 51375552 is about 371.7510185007.

The spelling of 51375552 in words is "fifty-one million, three hundred seventy-five thousand, five hundred fifty-two".