55257070 has 24 divisors (see below), whose sum is σ = 109329192. Its totient is φ = 20093040.

The previous prime is 55257049. The next prime is 55257071. The reversal of 55257070 is 7075255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55257071) 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, 21624 + ... + 24043.

It is an arithmetic number, because the mean of its divisors is an integer number (4555383).

Almost surely, 2^55257070 is an apocalyptic number.

55257070 is a deficient number, since it is larger than the sum of its proper divisors (54072122).

55257070 is a wasteful number, since it uses less digits than its factorization.

55257070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45696 (or 45685 counting only the distinct ones).

The product of its (nonzero) digits is 12250, while the sum is 31.

The square root of 55257070 is about 7433.5099381113. The cubic root of 55257070 is about 380.8868253441.

The spelling of 55257070 in words is "fifty-five million, two hundred fifty-seven thousand, seventy".