55732207 has 2 divisors, whose sum is σ = 55732208. Its totient is φ = 55732206.

The previous prime is 55732169. The next prime is 55732211. The reversal of 55732207 is 70223755.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55732207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55732267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27866103 + 27866104.

It is an arithmetic number, because the mean of its divisors is an integer number (27866104).

Almost surely, 2^55732207 is an apocalyptic number.

55732207 is a deficient number, since it is larger than the sum of its proper divisors (1).

55732207 is an equidigital number, since it uses as much as digits as its factorization.

55732207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 55732207 is about 7465.4006590403. The cubic root of 55732207 is about 381.9754171292.

The spelling of 55732207 in words is "fifty-five million, seven hundred thirty-two thousand, two hundred seven".