50557907 has 4 divisors (see below), whose sum is σ = 50635056. Its totient is φ = 50480760.

The previous prime is 50557901. The next prime is 50557909. The reversal of 50557907 is 70975505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 50557907 - 2¹⁴ = 50541523 is a prime.

It is a super-2 number, since 2×50557907² = 5112203920441298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50557901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37583 + ... + 38904.

It is an arithmetic number, because the mean of its divisors is an integer number (12658764).

Almost surely, 2^50557907 is an apocalyptic number.

50557907 is a deficient number, since it is larger than the sum of its proper divisors (77149).

50557907 is an equidigital number, since it uses as much as digits as its factorization.

50557907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77148.

The product of its (nonzero) digits is 55125, while the sum is 38.

The square root of 50557907 is about 7110.4083567683. The cubic root of 50557907 is about 369.7683161200.

The spelling of 50557907 in words is "fifty million, five hundred fifty-seven thousand, nine hundred seven".