61250813 has 32 divisors (see below), whose sum is σ = 76204800. Its totient is φ = 48577536.

The previous prime is 61250803. The next prime is 61250821. The reversal of 61250813 is 31805216.

It is a cyclic number.

It is not a de Polignac number, because 61250813 - 2¹⁶ = 61185277 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 (61250803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121520 + ... + 122022.

It is an arithmetic number, because the mean of its divisors is an integer number (2381400).

Almost surely, 2^61250813 is an apocalyptic number.

It is an amenable number.

61250813 is a deficient number, since it is larger than the sum of its proper divisors (14953987).

61250813 is a wasteful number, since it uses less digits than its factorization.

61250813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 61250813 is about 7826.2898617416. The cubic root of 61250813 is about 394.1885022228.

The spelling of 61250813 in words is "sixty-one million, two hundred fifty thousand, eight hundred thirteen".