57152247 has 16 divisors (see below), whose sum is σ = 80492160. Its totient is φ = 35970912.

The previous prime is 57152233. The next prime is 57152281. The reversal of 57152247 is 74225175.

It is not a de Polignac number, because 57152247 - 2⁷ = 57152119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57153247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16488 + ... + 19650.

It is an arithmetic number, because the mean of its divisors is an integer number (5030760).

Almost surely, 2^57152247 is an apocalyptic number.

57152247 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

57152247 is a deficient number, since it is larger than the sum of its proper divisors (23339913).

57152247 is a wasteful number, since it uses less digits than its factorization.

57152247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3502.

The product of its digits is 19600, while the sum is 33.

The square root of 57152247 is about 7559.9105153434. The cubic root of 57152247 is about 385.1924533955.

The spelling of 57152247 in words is "fifty-seven million, one hundred fifty-two thousand, two hundred forty-seven".