61535413 has 4 divisors (see below), whose sum is σ = 62453920. Its totient is φ = 60616908.

The previous prime is 61535381. The next prime is 61535417. The reversal of 61535413 is 31453516.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61535413 - 2⁵ = 61535381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61535417) 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, 459153 + ... + 459286.

It is an arithmetic number, because the mean of its divisors is an integer number (15613480).

Almost surely, 2^61535413 is an apocalyptic number.

It is an amenable number.

61535413 is a deficient number, since it is larger than the sum of its proper divisors (918507).

61535413 is an equidigital number, since it uses as much as digits as its factorization.

61535413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918506.

The product of its digits is 5400, while the sum is 28.

The square root of 61535413 is about 7844.4510961571. The cubic root of 61535413 is about 394.7980872665.

Adding to 61535413 its reverse (31453516), we get a palindrome (92988929).

The spelling of 61535413 in words is "sixty-one million, five hundred thirty-five thousand, four hundred thirteen".