61506353 has 4 divisors (see below), whose sum is σ = 61667328. Its totient is φ = 61345380.

The previous prime is 61506349. The next prime is 61506359. The reversal of 61506353 is 35360516.

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 61506353 - 2² = 61506349 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61506359) 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, 79913 + ... + 80678.

It is an arithmetic number, because the mean of its divisors is an integer number (15416832).

Almost surely, 2^61506353 is an apocalyptic number.

It is an amenable number.

61506353 is a deficient number, since it is larger than the sum of its proper divisors (160975).

61506353 is a wasteful number, since it uses less digits than its factorization.

61506353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160974.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 61506353 is about 7842.5986127048. The cubic root of 61506353 is about 394.7359298933.

Adding to 61506353 its reverse (35360516), we get a palindrome (96866869).

The spelling of 61506353 in words is "sixty-one million, five hundred six thousand, three hundred fifty-three".