61901113 has 2 divisors, whose sum is σ = 61901114. Its totient is φ = 61901112.

The previous prime is 61901093. The next prime is 61901149. The reversal of 61901113 is 31110916.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35141184 + 26759929 = 5928^2 + 5173^2 .

It is a cyclic number.

It is not a de Polignac number, because 61901113 - 2¹³ = 61892921 is a prime.

It is not a weakly prime, because it can be changed into another prime (61901173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30950556 + 30950557.

It is an arithmetic number, because the mean of its divisors is an integer number (30950557).

Almost surely, 2^61901113 is an apocalyptic number.

It is an amenable number.

61901113 is a deficient number, since it is larger than the sum of its proper divisors (1).

61901113 is an equidigital number, since it uses as much as digits as its factorization.

61901113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 61901113 is about 7867.7260374266. The cubic root of 61901113 is about 395.5786274779.

The spelling of 61901113 in words is "sixty-one million, nine hundred one thousand, one hundred thirteen".