61406451 has 32 divisors (see below), whose sum is σ = 93899520. Its totient is φ = 39638592.

The previous prime is 61406419. The next prime is 61406453. The reversal of 61406451 is 15460416.

61406451 is a `hidden beast` number, since 6 + 14 + 0 + 645 + 1 = 666.

It is not a de Polignac number, because 61406451 - 2⁵ = 61406419 is a prime.

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 (61406453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 263431 + ... + 263663.

It is an arithmetic number, because the mean of its divisors is an integer number (2934360).

Almost surely, 2^61406451 is an apocalyptic number.

61406451 is a deficient number, since it is larger than the sum of its proper divisors (32493069).

61406451 is a wasteful number, since it uses less digits than its factorization.

61406451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 61406451 is about 7836.2268343891. The cubic root of 61406451 is about 394.5220968120.

Adding to 61406451 its reverse (15460416), we get a palindrome (76866867).

The spelling of 61406451 in words is "sixty-one million, four hundred six thousand, four hundred fifty-one".