48637691 has 4 divisors (see below), whose sum is σ = 48759384. Its totient is φ = 48516000.

The previous prime is 48637681. The next prime is 48637741. The reversal of 48637691 is 19673684.

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 48637691 - 2²² = 44443387 is a prime.

It is a super-2 number, since 2×48637691² = 4731249971622962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48637681) 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, 60245 + ... + 61046.

It is an arithmetic number, because the mean of its divisors is an integer number (12189846).

Almost surely, 2^48637691 is an apocalyptic number.

48637691 is a deficient number, since it is larger than the sum of its proper divisors (121693).

48637691 is a wasteful number, since it uses less digits than its factorization.

48637691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121692.

The product of its digits is 217728, while the sum is 44.

The square root of 48637691 is about 6974.0727699100. The cubic root of 48637691 is about 365.0264345651.

The spelling of 48637691 in words is "forty-eight million, six hundred thirty-seven thousand, six hundred ninety-one".