55007375 has 48 divisors (see below), whose sum is σ = 77029056. Its totient is φ = 39124800.

The previous prime is 55007371. The next prime is 55007399. The reversal of 55007375 is 57370055.

It is not a de Polignac number, because 55007375 - 2² = 55007371 is a prime.

It is a super-2 number, since 2×55007375² = 6051622608781250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55007371) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1037849 + ... + 1037901.

It is an arithmetic number, because the mean of its divisors is an integer number (1604772).

Almost surely, 2^55007375 is an apocalyptic number.

55007375 is a deficient number, since it is larger than the sum of its proper divisors (22021681).

55007375 is a wasteful number, since it uses less digits than its factorization.

55007375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 18375, while the sum is 32.

The square root of 55007375 is about 7416.6956928271. The cubic root of 55007375 is about 380.3122433615.

The spelling of 55007375 in words is "fifty-five million, seven thousand, three hundred seventy-five".