55572947 has 2 divisors, whose sum is σ = 55572948. Its totient is φ = 55572946.

The previous prime is 55572943. The next prime is 55572971. The reversal of 55572947 is 74927555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55572947 - 2² = 55572943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55572898 and 55572907.

It is not a weakly prime, because it can be changed into another prime (55572943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27786473 + 27786474.

It is an arithmetic number, because the mean of its divisors is an integer number (27786474).

Almost surely, 2^55572947 is an apocalyptic number.

55572947 is a deficient number, since it is larger than the sum of its proper divisors (1).

55572947 is an equidigital number, since it uses as much as digits as its factorization.

55572947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 441000, while the sum is 44.

The square root of 55572947 is about 7454.7264872697. The cubic root of 55572947 is about 381.6112264987.

The spelling of 55572947 in words is "fifty-five million, five hundred seventy-two thousand, nine hundred forty-seven".