61125637 has 2 divisors, whose sum is σ = 61125638. Its totient is φ = 61125636.

The previous prime is 61125607. The next prime is 61125703. The reversal of 61125637 is 73652116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60435076 + 690561 = 7774^2 + 831^2 .

It is a cyclic number.

It is not a de Polignac number, because 61125637 - 2¹⁵ = 61092869 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 61125599 and 61125608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61125607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30562818 + 30562819.

It is an arithmetic number, because the mean of its divisors is an integer number (30562819).

Almost surely, 2^61125637 is an apocalyptic number.

It is an amenable number.

61125637 is a deficient number, since it is larger than the sum of its proper divisors (1).

61125637 is an equidigital number, since it uses as much as digits as its factorization.

61125637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 31.

The square root of 61125637 is about 7818.2886234776. The cubic root of 61125637 is about 393.9197896448.

The spelling of 61125637 in words is "sixty-one million, one hundred twenty-five thousand, six hundred thirty-seven".