55574145 has 72 divisors (see below), whose sum is σ = 111264192. Its totient is φ = 25444800.

The previous prime is 55574143. The next prime is 55574177. The reversal of 55574145 is 54147555.

It is not a de Polignac number, because 55574145 - 2¹ = 55574143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55574143) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 178540 + ... + 178850.

It is an arithmetic number, because the mean of its divisors is an integer number (1545336).

Almost surely, 2^55574145 is an apocalyptic number.

55574145 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55574145 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

55574145 is a wasteful number, since it uses less digits than its factorization.

55574145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 349 counting only the distinct ones).

The product of its digits is 70000, while the sum is 36.

The square root of 55574145 is about 7454.8068385438. The cubic root of 55574145 is about 381.6139686420.

The spelling of 55574145 in words is "fifty-five million, five hundred seventy-four thousand, one hundred forty-five".