52557147 has 8 divisors (see below), whose sum is σ = 77862480. Its totient is φ = 35038080.

The previous prime is 52557143. The next prime is 52557157. The reversal of 52557147 is 74175525.

It is not a de Polignac number, because 52557147 - 2² = 52557143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52557143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 973254 + ... + 973307.

It is an arithmetic number, because the mean of its divisors is an integer number (9732810).

Almost surely, 2^52557147 is an apocalyptic number.

52557147 is a deficient number, since it is larger than the sum of its proper divisors (25305333).

52557147 is a wasteful number, since it uses less digits than its factorization.

52557147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946570 (or 1946564 counting only the distinct ones).

The product of its digits is 49000, while the sum is 36.

The square root of 52557147 is about 7249.6308181865. The cubic root of 52557147 is about 374.5794325043.

The spelling of 52557147 in words is "fifty-two million, five hundred fifty-seven thousand, one hundred forty-seven".