139551048 has 288 divisors, whose sum is σ = 499262400. Its totient is φ = 34276608.

The previous prime is 139551047. The next prime is 139551053. The reversal of 139551048 is 840155931.

139551048 is a `hidden beast` number, since 13 + 95 + 510 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (139551047) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2365243 + ... + 2365301.

It is an arithmetic number, because the mean of its divisors is an integer number (1733550).

Almost surely, 2^139551048 is an apocalyptic number.

139551048 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139551048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249631200).

139551048 is an abundant number, since it is smaller than the sum of its proper divisors (359711352).

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

139551048 is a wasteful number, since it uses less digits than its factorization.

139551048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 139551048 is about 11813.1726475151. The cubic root of 139551048 is about 518.6937728190.

The spelling of 139551048 in words is "one hundred thirty-nine million, five hundred fifty-one thousand, forty-eight".