61465572 has 36 divisors (see below), whose sum is σ = 177567936. Its totient is φ = 17561520.

The previous prime is 61465571. The next prime is 61465597. The reversal of 61465572 is 27556416.

It is a happy number.

61465572 is a `hidden beast` number, since 61 + 46 + 557 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (61465571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121704 + ... + 122207.

Almost surely, 2^61465572 is an apocalyptic number.

It is an amenable number.

61465572 is an abundant number, since it is smaller than the sum of its proper divisors (116102364).

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

61465572 is a wasteful number, since it uses less digits than its factorization.

61465572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243928 (or 243923 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 61465572 is about 7839.9982142855. The cubic root of 61465572 is about 394.6486690696.

The spelling of 61465572 in words is "sixty-one million, four hundred sixty-five thousand, five hundred seventy-two".