61311048 has 32 divisors (see below), whose sum is σ = 153540960. Its totient is φ = 20401920.

The previous prime is 61311037. The next prime is 61311067. The reversal of 61311048 is 84011316.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14736 + ... + 18432.

It is an arithmetic number, because the mean of its divisors is an integer number (4798155).

Almost surely, 2^61311048 is an apocalyptic number.

It is an amenable number.

61311048 is an abundant number, since it is smaller than the sum of its proper divisors (92229912).

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

61311048 is a wasteful number, since it uses less digits than its factorization.

61311048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4397 (or 4393 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 61311048 is about 7830.1371635496. The cubic root of 61311048 is about 394.3176769180.

The spelling of 61311048 in words is "sixty-one million, three hundred eleven thousand, forty-eight".