61512349 has 4 divisors (see below), whose sum is σ = 61528636. Its totient is φ = 61496064.

The previous prime is 61512337. The next prime is 61512359. The reversal of 61512349 is 94321516.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17489124 + 44023225 = 4182^2 + 6635^2 .

It is a cyclic number.

It is not a de Polignac number, because 61512349 - 2¹⁵ = 61479581 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61512349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61512359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 787 + ... + 11119.

It is an arithmetic number, because the mean of its divisors is an integer number (15382159).

Almost surely, 2^61512349 is an apocalyptic number.

It is an amenable number.

61512349 is a deficient number, since it is larger than the sum of its proper divisors (16287).

61512349 is a wasteful number, since it uses less digits than its factorization.

61512349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16286.

The product of its digits is 6480, while the sum is 31.

The square root of 61512349 is about 7842.9808746420. The cubic root of 61512349 is about 394.7487565343.

The spelling of 61512349 in words is "sixty-one million, five hundred twelve thousand, three hundred forty-nine".