61120554 has 64 divisors (see below), whose sum is σ = 138008448. Its totient is φ = 17888000.

The previous prime is 61120531. The next prime is 61120567. The reversal of 61120554 is 45502116.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 353212 + ... + 353384.

It is an arithmetic number, because the mean of its divisors is an integer number (2156382).

Almost surely, 2^61120554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61120554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69004224).

61120554 is an abundant number, since it is smaller than the sum of its proper divisors (76887894).

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

61120554 is a wasteful number, since it uses less digits than its factorization.

61120554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 61120554 is about 7817.9635455789. The cubic root of 61120554 is about 393.9088703323.

The spelling of 61120554 in words is "sixty-one million, one hundred twenty thousand, five hundred fifty-four".