48513978 has 24 divisors (see below), whose sum is σ = 109007808. Its totient is φ = 16171164.

The previous prime is 48513967. The next prime is 48513991. The reversal of 48513978 is 87931584.

48513978 is a `hidden beast` number, since 48 + 513 + 97 + 8 = 666.

48513978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×48513978² = 4707212122768968, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49426 + ... + 50397.

It is an arithmetic number, because the mean of its divisors is an integer number (4541992).

Almost surely, 2^48513978 is an apocalyptic number.

48513978 is an abundant number, since it is smaller than the sum of its proper divisors (60493830).

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

48513978 is an equidigital number, since it uses as much as digits as its factorization.

48513978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99840 (or 99828 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 48513978 is about 6965.1976282084. The cubic root of 48513978 is about 364.7166826258.

The spelling of 48513978 in words is "forty-eight million, five hundred thirteen thousand, nine hundred seventy-eight".