55983407 has 2 divisors, whose sum is σ = 55983408. Its totient is φ = 55983406.

The previous prime is 55983373. The next prime is 55983413. The reversal of 55983407 is 70438955.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55983407 - 2²² = 51789103 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55983457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27991703 + 27991704.

It is an arithmetic number, because the mean of its divisors is an integer number (27991704).

Almost surely, 2^55983407 is an apocalyptic number.

55983407 is a deficient number, since it is larger than the sum of its proper divisors (1).

55983407 is an equidigital number, since it uses as much as digits as its factorization.

55983407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 55983407 is about 7482.2060249635. The cubic root of 55983407 is about 382.5484455989.

The spelling of 55983407 in words is "fifty-five million, nine hundred eighty-three thousand, four hundred seven".