56669453 has 2 divisors, whose sum is σ = 56669454. Its totient is φ = 56669452.

The previous prime is 56669443. The next prime is 56669461. The reversal of 56669453 is 35496665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42994249 + 13675204 = 6557^2 + 3698^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56669453 is a prime.

It is a super-2 number, since 2×56669453² = 6422853806638418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56669443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28334726 + 28334727.

It is an arithmetic number, because the mean of its divisors is an integer number (28334727).

Almost surely, 2^56669453 is an apocalyptic number.

It is an amenable number.

56669453 is a deficient number, since it is larger than the sum of its proper divisors (1).

56669453 is an equidigital number, since it uses as much as digits as its factorization.

56669453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 44.

The square root of 56669453 is about 7527.9115961866. The cubic root of 56669453 is about 384.1047461828.

The spelling of 56669453 in words is "fifty-six million, six hundred sixty-nine thousand, four hundred fifty-three".