61255380 has 48 divisors (see below), whose sum is σ = 177053184. Its totient is φ = 15807360.

The previous prime is 61255367. The next prime is 61255399. The reversal of 61255380 is 8355216.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14607 + ... + 18326.

It is an arithmetic number, because the mean of its divisors is an integer number (3688608).

Almost surely, 2^61255380 is an apocalyptic number.

61255380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61255380 is an abundant number, since it is smaller than the sum of its proper divisors (115797804).

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

61255380 is a wasteful number, since it uses less digits than its factorization.

61255380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32976 (or 32974 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 61255380 is about 7826.5816292939. The cubic root of 61255380 is about 394.1982991766.

The spelling of 61255380 in words is "sixty-one million, two hundred fifty-five thousand, three hundred eighty".