61251199 has 16 divisors (see below), whose sum is σ = 64862208. Its totient is φ = 57781152.

The previous prime is 61251191. The next prime is 61251241. The reversal of 61251199 is 99115216.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 61251199 - 2³ = 61251191 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 (61251191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166714 + ... + 167080.

It is an arithmetic number, because the mean of its divisors is an integer number (4053888).

Almost surely, 2^61251199 is an apocalyptic number.

61251199 is a deficient number, since it is larger than the sum of its proper divisors (3611009).

61251199 is a wasteful number, since it uses less digits than its factorization.

61251199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534.

The product of its digits is 4860, while the sum is 34.

The square root of 61251199 is about 7826.3145221745. The cubic root of 61251199 is about 394.1893302741.

The spelling of 61251199 in words is "sixty-one million, two hundred fifty-one thousand, one hundred ninety-nine".