61273099 has 2 divisors, whose sum is σ = 61273100. Its totient is φ = 61273098.

The previous prime is 61273087. The next prime is 61273123. The reversal of 61273099 is 99037216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61273099 - 2⁵ = 61273067 is a prime.

It is a super-2 number, since 2×61273099² = 7508785322127602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61273699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30636549 + 30636550.

It is an arithmetic number, because the mean of its divisors is an integer number (30636550).

Almost surely, 2^61273099 is an apocalyptic number.

61273099 is a deficient number, since it is larger than the sum of its proper divisors (1).

61273099 is an equidigital number, since it uses as much as digits as its factorization.

61273099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 61273099 is about 7827.7135231177. The cubic root of 61273099 is about 394.2363046889.

The spelling of 61273099 in words is "sixty-one million, two hundred seventy-three thousand, ninety-nine".