61805052 has 24 divisors (see below), whose sum is σ = 160235600. Its totient is φ = 20601648.

The previous prime is 61805033. The next prime is 61805053. The reversal of 61805052 is 25050816.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61805053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286027 + ... + 286242.

Almost surely, 2^61805052 is an apocalyptic number.

It is an amenable number.

61805052 is an abundant number, since it is smaller than the sum of its proper divisors (98430548).

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

61805052 is a wasteful number, since it uses less digits than its factorization.

61805052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572282 (or 572274 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 61805052 is about 7861.6189172460. The cubic root of 61805052 is about 395.3738958222.

Adding to 61805052 its reverse (25050816), we get a palindrome (86855868).

The spelling of 61805052 in words is "sixty-one million, eight hundred five thousand, fifty-two".