61002499 has 2 divisors, whose sum is σ = 61002500. Its totient is φ = 61002498.

The previous prime is 61002493. The next prime is 61002517. The reversal of 61002499 is 99420016.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61002499 - 2⁵ = 61002467 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61002499.

It is not a weakly prime, because it can be changed into another prime (61002493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30501249 + 30501250.

It is an arithmetic number, because the mean of its divisors is an integer number (30501250).

Almost surely, 2^61002499 is an apocalyptic number.

61002499 is a deficient number, since it is larger than the sum of its proper divisors (1).

61002499 is an equidigital number, since it uses as much as digits as its factorization.

61002499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 61002499 is about 7810.4096563497. The cubic root of 61002499 is about 393.6550938141.

The spelling of 61002499 in words is "sixty-one million, two thousand, four hundred ninety-nine".