50491491 has 4 divisors (see below), whose sum is σ = 67321992. Its totient is φ = 33660992.

The previous prime is 50491477. The next prime is 50491499. The reversal of 50491491 is 19419405.

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 50491491 - 2²² = 46297187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50491499) 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, 8415246 + ... + 8415251.

It is an arithmetic number, because the mean of its divisors is an integer number (16830498).

Almost surely, 2^50491491 is an apocalyptic number.

50491491 is a deficient number, since it is larger than the sum of its proper divisors (16830501).

50491491 is a wasteful number, since it uses less digits than its factorization.

50491491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16830500.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 50491491 is about 7105.7364854039. The cubic root of 50491491 is about 369.6063283080.

The spelling of 50491491 in words is "fifty million, four hundred ninety-one thousand, four hundred ninety-one".