55325538 has 16 divisors (see below), whose sum is σ = 122945760. Its totient is φ = 18441828.

The previous prime is 55325537. The next prime is 55325551. The reversal of 55325538 is 83552355.

It is a super-3 number, since 3×55325538³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55325537) 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, 512220 + ... + 512327.

It is an arithmetic number, because the mean of its divisors is an integer number (7684110).

Almost surely, 2^55325538 is an apocalyptic number.

55325538 is an abundant number, since it is smaller than the sum of its proper divisors (67620222).

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

55325538 is a wasteful number, since it uses less digits than its factorization.

55325538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024558 (or 1024552 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 55325538 is about 7438.1138738258. The cubic root of 55325538 is about 381.0440769888.

The spelling of 55325538 in words is "fifty-five million, three hundred twenty-five thousand, five hundred thirty-eight".