61355020 has 24 divisors (see below), whose sum is σ = 130960368. Its totient is φ = 24139200.

The previous prime is 61355003. The next prime is 61355051. The reversal of 61355020 is 2055316.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 61354982 and 61355000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23926 + ... + 26365.

It is an arithmetic number, because the mean of its divisors is an integer number (5456682).

Almost surely, 2^61355020 is an apocalyptic number.

It is an amenable number.

61355020 is an abundant number, since it is smaller than the sum of its proper divisors (69605348).

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

61355020 is a wasteful number, since it uses less digits than its factorization.

61355020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50361 (or 50359 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 61355020 is about 7832.9445293580. The cubic root of 61355020 is about 394.4119219955.

The spelling of 61355020 in words is "sixty-one million, three hundred fifty-five thousand, twenty".