61953499 has 2 divisors, whose sum is σ = 61953500. Its totient is φ = 61953498.

The previous prime is 61953443. The next prime is 61953527. The reversal of 61953499 is 99435916.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61953499 - 2⁷ = 61953371 is a prime.

It is not a weakly prime, because it can be changed into another prime (61993499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30976749 + 30976750.

It is an arithmetic number, because the mean of its divisors is an integer number (30976750).

Almost surely, 2^61953499 is an apocalyptic number.

61953499 is a deficient number, since it is larger than the sum of its proper divisors (1).

61953499 is an equidigital number, since it uses as much as digits as its factorization.

61953499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262440, while the sum is 46.

The square root of 61953499 is about 7871.0545036863. The cubic root of 61953499 is about 395.6901868017.

The spelling of 61953499 in words is "sixty-one million, nine hundred fifty-three thousand, four hundred ninety-nine".