61125651 has 32 divisors (see below), whose sum is σ = 95109120. Its totient is φ = 38725632.

The previous prime is 61125637. The next prime is 61125703. The reversal of 61125651 is 15652116.

It is a happy number.

61125651 is a `hidden beast` number, since 6 + 1 + 1 + 2 + 5 + 651 = 666.

It is not a de Polignac number, because 61125651 - 2⁶ = 61125587 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 (63125651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159406 + ... + 159788.

It is an arithmetic number, because the mean of its divisors is an integer number (2972160).

Almost surely, 2^61125651 is an apocalyptic number.

61125651 is a deficient number, since it is larger than the sum of its proper divisors (33983469).

61125651 is a wasteful number, since it uses less digits than its factorization.

61125651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672 (or 666 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 61125651 is about 7818.2895188142. The cubic root of 61125651 is about 393.9198197188.

Adding to 61125651 its reverse (15652116), we get a palindrome (76777767).

It can be divided in two parts, 61125 and 651, that added together give a triangular number (61776 = T₃₅₁).

The spelling of 61125651 in words is "sixty-one million, one hundred twenty-five thousand, six hundred fifty-one".