61372099 has 2 divisors, whose sum is σ = 61372100. Its totient is φ = 61372098.

The previous prime is 61372079. The next prime is 61372111. The reversal of 61372099 is 99027316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61372099 - 2⁹ = 61371587 is a prime.

It is not a weakly prime, because it can be changed into another prime (61372009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30686049 + 30686050.

It is an arithmetic number, because the mean of its divisors is an integer number (30686050).

Almost surely, 2^61372099 is an apocalyptic number.

61372099 is a deficient number, since it is larger than the sum of its proper divisors (1).

61372099 is an equidigital number, since it uses as much as digits as its factorization.

61372099 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 61372099 is about 7834.0346565483. The cubic root of 61372099 is about 394.4485152320.

The spelling of 61372099 in words is "sixty-one million, three hundred seventy-two thousand, ninety-nine".