61055013 has 4 divisors (see below), whose sum is σ = 81406688. Its totient is φ = 40703340.

The previous prime is 61055011. The next prime is 61055017. The reversal of 61055013 is 31055016.

It is a happy number.

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 not a de Polignac number, because 61055013 - 2¹ = 61055011 is a prime.

It is a super-2 number, since 2×61055013² = 7455429224860338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61055011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10175833 + ... + 10175838.

It is an arithmetic number, because the mean of its divisors is an integer number (20351672).

Almost surely, 2^61055013 is an apocalyptic number.

It is an amenable number.

61055013 is a deficient number, since it is larger than the sum of its proper divisors (20351675).

61055013 is a wasteful number, since it uses less digits than its factorization.

61055013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20351674.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 61055013 is about 7813.7707286559. The cubic root of 61055013 is about 393.7680207424.

The spelling of 61055013 in words is "sixty-one million, fifty-five thousand, thirteen".