55057172 has 6 divisors (see below), whose sum is σ = 96350058. Its totient is φ = 27528584.

The previous prime is 55057153. The next prime is 55057181. The reversal of 55057172 is 27175055.

It can be written as a sum of positive squares in only one way, i.e., 49084036 + 5973136 = 7006^2 + 2444^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6882143 + ... + 6882150.

It is an arithmetic number, because the mean of its divisors is an integer number (16058343).

Almost surely, 2^55057172 is an apocalyptic number.

It is an amenable number.

55057172 is a deficient number, since it is larger than the sum of its proper divisors (41292886).

55057172 is a wasteful number, since it uses less digits than its factorization.

55057172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13764297 (or 13764295 counting only the distinct ones).

The product of its (nonzero) digits is 12250, while the sum is 32.

The square root of 55057172 is about 7420.0520213810. The cubic root of 55057172 is about 380.4269715945.

The spelling of 55057172 in words is "fifty-five million, fifty-seven thousand, one hundred seventy-two".