51533055 has 36 divisors (see below), whose sum is σ = 103911912. Its totient is φ = 23556960.

The previous prime is 51533051. The next prime is 51533057. The reversal of 51533055 is 55033515.

It is not a de Polignac number, because 51533055 - 2² = 51533051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51533051) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9481 + ... + 13890.

It is an arithmetic number, because the mean of its divisors is an integer number (2886442).

Almost surely, 2^51533055 is an apocalyptic number.

51533055 is an abundant number, since it is smaller than the sum of its proper divisors (52378857).

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

51533055 is a wasteful number, since it uses less digits than its factorization.

51533055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23396 (or 23386 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 27.

The square root of 51533055 is about 7178.6527287507. The cubic root of 51533055 is about 372.1305256498.

The spelling of 51533055 in words is "fifty-one million, five hundred thirty-three thousand, fifty-five".