55939567 has 2 divisors, whose sum is σ = 55939568. Its totient is φ = 55939566.

The previous prime is 55939561. The next prime is 55939589. The reversal of 55939567 is 76593955.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55939567 - 2¹⁹ = 55415279 is a prime.

It is a super-2 number, since 2×55939567² = 6258470312294978, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55939567.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55939561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27969783 + 27969784.

It is an arithmetic number, because the mean of its divisors is an integer number (27969784).

Almost surely, 2^55939567 is an apocalyptic number.

55939567 is a deficient number, since it is larger than the sum of its proper divisors (1).

55939567 is an equidigital number, since it uses as much as digits as its factorization.

55939567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1275750, while the sum is 49.

The square root of 55939567 is about 7479.2758339294. The cubic root of 55939567 is about 382.4485630065.

The spelling of 55939567 in words is "fifty-five million, nine hundred thirty-nine thousand, five hundred sixty-seven".