61085572 has 12 divisors (see below), whose sum is σ = 109507356. Its totient is φ = 29797760.

The previous prime is 61085567. The next prime is 61085579. The reversal of 61085572 is 27558016.

It can be written as a sum of positive squares in 2 ways, for example, as 31990336 + 29095236 = 5656^2 + 5394^2 .

It is not an unprimeable number, because it can be changed into a prime (61085579) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 186073 + ... + 186400.

It is an arithmetic number, because the mean of its divisors is an integer number (9125613).

Almost surely, 2^61085572 is an apocalyptic number.

It is an amenable number.

61085572 is a deficient number, since it is larger than the sum of its proper divisors (48421784).

61085572 is a wasteful number, since it uses less digits than its factorization.

61085572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372518 (or 372516 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 61085572 is about 7815.7259419711. The cubic root of 61085572 is about 393.8337054930.

It can be divided in two parts, 61085 and 572, that multiplied together give a triangular number (34940620 = T₈₃₅₉).

The spelling of 61085572 in words is "sixty-one million, eighty-five thousand, five hundred seventy-two".