55732091 has 2 divisors, whose sum is σ = 55732092. Its totient is φ = 55732090.

The previous prime is 55732057. The next prime is 55732147. The reversal of 55732091 is 19023755.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55732091 - 2¹⁴ = 55715707 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55732021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27866045 + 27866046.

It is an arithmetic number, because the mean of its divisors is an integer number (27866046).

Almost surely, 2^55732091 is an apocalyptic number.

55732091 is a deficient number, since it is larger than the sum of its proper divisors (1).

55732091 is an equidigital number, since it uses as much as digits as its factorization.

55732091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 55732091 is about 7465.3928898619. The cubic root of 55732091 is about 381.9751521168.

The spelling of 55732091 in words is "fifty-five million, seven hundred thirty-two thousand, ninety-one".