61562759 has 2 divisors, whose sum is σ = 61562760. Its totient is φ = 61562758.

The previous prime is 61562741. The next prime is 61562779. The reversal of 61562759 is 95726516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61562759 - 2⁸ = 61562503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61562719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30781379 + 30781380.

It is an arithmetic number, because the mean of its divisors is an integer number (30781380).

Almost surely, 2^61562759 is an apocalyptic number.

61562759 is a deficient number, since it is larger than the sum of its proper divisors (1).

61562759 is an equidigital number, since it uses as much as digits as its factorization.

61562759 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 41.

The square root of 61562759 is about 7846.1939180726. The cubic root of 61562759 is about 394.8565606404.

The spelling of 61562759 in words is "sixty-one million, five hundred sixty-two thousand, seven hundred fifty-nine".