61242499 has 2 divisors, whose sum is σ = 61242500. Its totient is φ = 61242498.

The previous prime is 61242469. The next prime is 61242521. The reversal of 61242499 is 99424216.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61242499 - 2¹⁹ = 60718211 is a prime.

It is not a weakly prime, because it can be changed into another prime (61242409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30621249 + 30621250.

It is an arithmetic number, because the mean of its divisors is an integer number (30621250).

Almost surely, 2^61242499 is an apocalyptic number.

61242499 is a deficient number, since it is larger than the sum of its proper divisors (1).

61242499 is an equidigital number, since it uses as much as digits as its factorization.

61242499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 37.

The square root of 61242499 is about 7825.7586852650. The cubic root of 61242499 is about 394.1706660977.

The spelling of 61242499 in words is "sixty-one million, two hundred forty-two thousand, four hundred ninety-nine".