55457069 has 2 divisors, whose sum is σ = 55457070. Its totient is φ = 55457068.

The previous prime is 55457033. The next prime is 55457089. The reversal of 55457069 is 96075455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55323844 + 133225 = 7438^2 + 365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55457069 is a prime.

It is a super-2 number, since 2×55457069² = 6150973004141522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55457089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27728534 + 27728535.

It is an arithmetic number, because the mean of its divisors is an integer number (27728535).

Almost surely, 2^55457069 is an apocalyptic number.

It is an amenable number.

55457069 is a deficient number, since it is larger than the sum of its proper divisors (1).

55457069 is an equidigital number, since it uses as much as digits as its factorization.

55457069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189000, while the sum is 41.

The square root of 55457069 is about 7446.9503153976. The cubic root of 55457069 is about 381.3458028881.

The spelling of 55457069 in words is "fifty-five million, four hundred fifty-seven thousand, sixty-nine".