61445952 has 112 divisors (see below), whose sum is σ = 183286400. Its totient is φ = 20435328.

The previous prime is 61445933. The next prime is 61445957. The reversal of 61445952 is 25954416.

61445952 is a `hidden beast` number, since 61 + 4 + 4 + 595 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61445957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139749 + ... + 140187.

Almost surely, 2^61445952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61445952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91643200).

61445952 is an abundant number, since it is smaller than the sum of its proper divisors (121840448).

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

61445952 is an frugal number, since it uses more digits than its factorization.

61445952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472 (or 444 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 61445952 is about 7838.7468386216. The cubic root of 61445952 is about 394.6066735772.

The spelling of 61445952 in words is "sixty-one million, four hundred forty-five thousand, nine hundred fifty-two".