61404453 has 16 divisors (see below), whose sum is σ = 99240000. Its totient is φ = 37214640.

The previous prime is 61404439. The next prime is 61404487. The reversal of 61404453 is 35440416.

61404453 is a `hidden beast` number, since 614 + 0 + 4 + 45 + 3 = 666.

It is not a de Polignac number, because 61404453 - 2⁹ = 61403941 is a prime.

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 (61404403) 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, 103078 + ... + 103671.

It is an arithmetic number, because the mean of its divisors is an integer number (6202500).

Almost surely, 2^61404453 is an apocalyptic number.

It is an amenable number.

61404453 is a deficient number, since it is larger than the sum of its proper divisors (37835547).

61404453 is a wasteful number, since it uses less digits than its factorization.

61404453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206769 (or 206763 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 61404453 is about 7836.0993485279. The cubic root of 61404453 is about 394.5178178712.

Adding to 61404453 its reverse (35440416), we get a palindrome (96844869).

The spelling of 61404453 in words is "sixty-one million, four hundred four thousand, four hundred fifty-three".