49161888 has 36 divisors (see below), whose sum is σ = 139804938. Its totient is φ = 16387200.

The previous prime is 49161869. The next prime is 49161901. The reversal of 49161888 is 88816194.

It can be written as a sum of positive squares in only one way, i.e., 30603024 + 18558864 = 5532^2 + 4308^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 85063 + ... + 85638.

Almost surely, 2^49161888 is an apocalyptic number.

49161888 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

49161888 is an abundant number, since it is smaller than the sum of its proper divisors (90643050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49161888 is a wasteful number, since it uses less digits than its factorization.

49161888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170717 (or 170706 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 49161888 is about 7011.5538933962. The cubic root of 49161888 is about 366.3331196299. Note that the first 3 decimals are identical.

The spelling of 49161888 in words is "forty-nine million, one hundred sixty-one thousand, eight hundred eighty-eight".