51557067 has 28 divisors (see below), whose sum is σ = 77909040. Its totient is φ = 34101648.

The previous prime is 51557057. The next prime is 51557081. The reversal of 51557067 is 76075515.

51557067 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51557067 - 2⁸ = 51556811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51557057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 143434 + ... + 143792.

Almost surely, 2^51557067 is an apocalyptic number.

51557067 is a deficient number, since it is larger than the sum of its proper divisors (26351973).

51557067 is an equidigital number, since it uses as much as digits as its factorization.

51557067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 36.

The square root of 51557067 is about 7180.3249926448. The cubic root of 51557067 is about 372.1883151642.

The spelling of 51557067 in words is "fifty-one million, five hundred fifty-seven thousand, sixty-seven".