61081452 has 42 divisors (see below), whose sum is σ = 160273148. Its totient is φ = 20359512.

The previous prime is 61081451. The next prime is 61081477. The reversal of 61081452 is 25418016.

61081452 is a `hidden beast` number, since 610 + 8 + 1 + 45 + 2 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (61081451) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 7558 + ... + 13389.

Almost surely, 2^61081452 is an apocalyptic number.

It is an amenable number.

61081452 is an abundant number, since it is smaller than the sum of its proper divisors (99191696).

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

61081452 is a wasteful number, since it uses less digits than its factorization.

61081452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20969 (or 20952 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 61081452 is about 7815.4623663607. The cubic root of 61081452 is about 393.8248510762.

Adding to 61081452 its reverse (25418016), we get a palindrome (86499468).

The spelling of 61081452 in words is "sixty-one million, eighty-one thousand, four hundred fifty-two".