61454988 has 108 divisors (see below), whose sum is σ = 185993808. Its totient is φ = 16758720.

The previous prime is 61454971. The next prime is 61454993. The reversal of 61454988 is 88945416.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 133078 + ... + 133538.

Almost surely, 2^61454988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61454988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92996904).

61454988 is an abundant number, since it is smaller than the sum of its proper divisors (124538820).

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

61454988 is a wasteful number, since it uses less digits than its factorization.

61454988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 496 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 61454988 is about 7839.3231850715. The cubic root of 61454988 is about 394.6260157308.

The spelling of 61454988 in words is "sixty-one million, four hundred fifty-four thousand, nine hundred eighty-eight".