129048552 has 48 divisors (see below), whose sum is σ = 362456640. Its totient is φ = 43015536.

The previous prime is 129048541. The next prime is 129048553. The reversal of 129048552 is 255840921.

129048552 is a `hidden beast` number, since 12 + 90 + 4 + 8 + 552 = 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 (129048553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31248 + ... + 35135.

It is an arithmetic number, because the mean of its divisors is an integer number (7551180).

Almost surely, 2^129048552 is an apocalyptic number.

129048552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129048552 is an abundant number, since it is smaller than the sum of its proper divisors (233408088).

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

129048552 is an equidigital number, since it uses as much as digits as its factorization.

129048552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66404 (or 66388 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 129048552 is about 11359.9538731458. The cubic root of 129048552 is about 505.3408175449.

It can be divided in two parts, 129048 and 552, that added together give a square (129600 = 360²).

The spelling of 129048552 in words is "one hundred twenty-nine million, forty-eight thousand, five hundred fifty-two".