55372068 has 36 divisors (see below), whose sum is σ = 142614108. Its totient is φ = 18108480.

The previous prime is 55372067. The next prime is 55372069. The reversal of 55372068 is 86027355.

It is an interprime number because it is at equal distance from previous prime (55372067) and next prime (55372069).

It can be written as a sum of positive squares in 2 ways, for example, as 49112064 + 6260004 = 7008^2 + 2502^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (55372067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12603 + ... + 16418.

It is an arithmetic number, because the mean of its divisors is an integer number (3961503).

Almost surely, 2^55372068 is an apocalyptic number.

It is an amenable number.

55372068 is an abundant number, since it is smaller than the sum of its proper divisors (87242040).

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

55372068 is a wasteful number, since it uses less digits than its factorization.

55372068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29084 (or 29079 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 55372068 is about 7441.2410255279. The cubic root of 55372068 is about 381.1508692191.

The spelling of 55372068 in words is "fifty-five million, three hundred seventy-two thousand, sixty-eight".