56667451 has 2 divisors, whose sum is σ = 56667452. Its totient is φ = 56667450.

The previous prime is 56667433. The next prime is 56667463. The reversal of 56667451 is 15476665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56667451 - 2⁵ = 56667419 is a prime.

It is a super-2 number, since 2×56667451² = 6422400005674802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56667151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28333725 + 28333726.

It is an arithmetic number, because the mean of its divisors is an integer number (28333726).

Almost surely, 2^56667451 is an apocalyptic number.

56667451 is a deficient number, since it is larger than the sum of its proper divisors (1).

56667451 is an equidigital number, since it uses as much as digits as its factorization.

56667451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 40.

The square root of 56667451 is about 7527.7786232062. The cubic root of 56667451 is about 384.1002229537.

The spelling of 56667451 in words is "fifty-six million, six hundred sixty-seven thousand, four hundred fifty-one".