61562939 has 2 divisors, whose sum is σ = 61562940. Its totient is φ = 61562938.

The previous prime is 61562909. The next prime is 61562951. The reversal of 61562939 is 93926516.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61562939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61562896 and 61562905.

It is not a weakly prime, because it can be changed into another prime (61562909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30781469 + 30781470.

It is an arithmetic number, because the mean of its divisors is an integer number (30781470).

Almost surely, 2^61562939 is an apocalyptic number.

61562939 is a deficient number, since it is larger than the sum of its proper divisors (1).

61562939 is an equidigital number, since it uses as much as digits as its factorization.

61562939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 41.

The square root of 61562939 is about 7846.2053885939. The cubic root of 61562939 is about 394.8569454732.

The spelling of 61562939 in words is "sixty-one million, five hundred sixty-two thousand, nine hundred thirty-nine".