55438967 has 2 divisors, whose sum is σ = 55438968. Its totient is φ = 55438966.

The previous prime is 55438951. The next prime is 55438973. The reversal of 55438967 is 76983455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55438967 - 2⁴ = 55438951 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 (55438907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27719483 + 27719484.

It is an arithmetic number, because the mean of its divisors is an integer number (27719484).

Almost surely, 2^55438967 is an apocalyptic number.

55438967 is a deficient number, since it is larger than the sum of its proper divisors (1).

55438967 is an equidigital number, since it uses as much as digits as its factorization.

55438967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 47.

The square root of 55438967 is about 7445.7348193446. The cubic root of 55438967 is about 381.3043060866.

The spelling of 55438967 in words is "fifty-five million, four hundred thirty-eight thousand, nine hundred sixty-seven".