61542600 has 96 divisors (see below), whose sum is σ = 218051520. Its totient is φ = 14065920.

The previous prime is 61542563. The next prime is 61542619. The reversal of 61542600 is 624516.

It is a super-2 number, since 2×61542600² = 7574983229520000, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 3127 + ... + 11526.

It is an arithmetic number, because the mean of its divisors is an integer number (2271370).

Almost surely, 2^61542600 is an apocalyptic number.

61542600 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61542600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109025760).

61542600 is an abundant number, since it is smaller than the sum of its proper divisors (156508920).

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

61542600 is a wasteful number, since it uses less digits than its factorization.

61542600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14679 (or 14670 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 61542600 is about 7844.9091772945. The cubic root of 61542600 is about 394.8134567546.

The spelling of 61542600 in words is "sixty-one million, five hundred forty-two thousand, six hundred".