48181591 has 2 divisors, whose sum is σ = 48181592. Its totient is φ = 48181590.

The previous prime is 48181579. The next prime is 48181607. The reversal of 48181591 is 19518184.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 48181591 - 2¹¹ = 48179543 is a prime.

It is a super-2 number, since 2×48181591² = 4642931422582562, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 48181591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48181541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24090795 + 24090796.

It is an arithmetic number, because the mean of its divisors is an integer number (24090796).

Almost surely, 2^48181591 is an apocalyptic number.

48181591 is a deficient number, since it is larger than the sum of its proper divisors (1).

48181591 is an equidigital number, since it uses as much as digits as its factorization.

48181591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 37.

The square root of 48181591 is about 6941.2960605351. The cubic root of 48181591 is about 363.8818373251.

The spelling of 48181591 in words is "forty-eight million, one hundred eighty-one thousand, five hundred ninety-one".