61953513 has 8 divisors (see below), whose sum is σ = 86196288. Its totient is φ = 39506544.

The previous prime is 61953499. The next prime is 61953527. The reversal of 61953513 is 31535916.

It is an interprime number because it is at equal distance from previous prime (61953499) and next prime (61953527).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61953513 - 2⁸ = 61953257 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61953113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448870 + ... + 449007.

It is an arithmetic number, because the mean of its divisors is an integer number (10774536).

Almost surely, 2^61953513 is an apocalyptic number.

It is an amenable number.

61953513 is a deficient number, since it is larger than the sum of its proper divisors (24242775).

61953513 is a wasteful number, since it uses less digits than its factorization.

61953513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897903.

The product of its digits is 12150, while the sum is 33.

The square root of 61953513 is about 7871.0553930207. The cubic root of 61953513 is about 395.6902166072.

The spelling of 61953513 in words is "sixty-one million, nine hundred fifty-three thousand, five hundred thirteen".