61537020 has 48 divisors (see below), whose sum is σ = 172730880. Its totient is φ = 16369216.

The previous prime is 61537019. The next prime is 61537037. The reversal of 61537020 is 2073516.

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, 29161 + ... + 31199.

It is an arithmetic number, because the mean of its divisors is an integer number (3598560).

Almost surely, 2^61537020 is an apocalyptic number.

61537020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61537020 is an abundant number, since it is smaller than the sum of its proper divisors (111193860).

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

61537020 is a wasteful number, since it uses less digits than its factorization.

61537020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2554 (or 2552 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 61537020 is about 7844.5535245800. The cubic root of 61537020 is about 394.8015239597.

The spelling of 61537020 in words is "sixty-one million, five hundred thirty-seven thousand, twenty".