61542937 has 2 divisors, whose sum is σ = 61542938. Its totient is φ = 61542936.

The previous prime is 61542931. The next prime is 61542973. The reversal of 61542937 is 73924516.

Together with next prime (61542973) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47734281 + 13808656 = 6909^2 + 3716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61542937 is a prime.

It is a zygodrome in base 5.

It is a junction number, because it is equal to n+sod(n) for n = 61542896 and 61542905.

It is not a weakly prime, because it can be changed into another prime (61542931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30771468 + 30771469.

It is an arithmetic number, because the mean of its divisors is an integer number (30771469).

Almost surely, 2^61542937 is an apocalyptic number.

It is an amenable number.

61542937 is a deficient number, since it is larger than the sum of its proper divisors (1).

61542937 is an equidigital number, since it uses as much as digits as its factorization.

61542937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 61542937 is about 7844.9306561626. The cubic root of 61542937 is about 394.8141774039.

The spelling of 61542937 in words is "sixty-one million, five hundred forty-two thousand, nine hundred thirty-seven".