61654131 has 48 divisors (see below), whose sum is σ = 113667840. Its totient is φ = 31268160.

The previous prime is 61654129. The next prime is 61654139. The reversal of 61654131 is 13145616.

61654131 is a `hidden beast` number, since 6 + 1 + 654 + 1 + 3 + 1 = 666.

It is not a de Polignac number, because 61654131 - 2¹ = 61654129 is a prime.

It is a super-2 number, since 2×61654131² = 7602463738730322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61654095 and 61654104.

It is not an unprimeable number, because it can be changed into a prime (61654139) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28765 + ... + 30833.

It is an arithmetic number, because the mean of its divisors is an integer number (2368080).

Almost surely, 2^61654131 is an apocalyptic number.

61654131 is a deficient number, since it is larger than the sum of its proper divisors (52013709).

61654131 is a wasteful number, since it uses less digits than its factorization.

61654131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136 (or 2133 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 61654131 is about 7852.0144549026. The cubic root of 61654131 is about 395.0518139582.

Adding to 61654131 its reverse (13145616), we get a palindrome (74799747).

It can be divided in two parts, 6165 and 4131, that added together give a triangular number (10296 = T₁₄₃).

The spelling of 61654131 in words is "sixty-one million, six hundred fifty-four thousand, one hundred thirty-one".