48191581 has 8 divisors (see below), whose sum is σ = 50803200. Its totient is φ = 45587520.

The previous prime is 48191579. The next prime is 48191593. The reversal of 48191581 is 18519184.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 48191581 - 2¹ = 48191579 is a prime.

It is a super-2 number, since 2×48191581² = 4644856958559122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 48191581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48194581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15300 + ... + 18178.

It is an arithmetic number, because the mean of its divisors is an integer number (6350400).

Almost surely, 2^48191581 is an apocalyptic number.

It is an amenable number.

48191581 is a deficient number, since it is larger than the sum of its proper divisors (2611619).

48191581 is a wasteful number, since it uses less digits than its factorization.

48191581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3779.

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

The square root of 48191581 is about 6942.0156294840. The cubic root of 48191581 is about 363.9069847467.

It can be divided in two parts, 4819 and 1581, that added together give a square (6400 = 80²).

The spelling of 48191581 in words is "forty-eight million, one hundred ninety-one thousand, five hundred eighty-one".