61115497 has 2 divisors, whose sum is σ = 61115498. Its totient is φ = 61115496.

The previous prime is 61115491. The next prime is 61115503. The reversal of 61115497 is 79451116.

It is a balanced prime because it is at equal distance from previous prime (61115491) and next prime (61115503).

It can be written as a sum of positive squares in only one way, i.e., 60543961 + 571536 = 7781^2 + 756^2 .

It is a cyclic number.

It is not a de Polignac number, because 61115497 - 2³ = 61115489 is a prime.

It is not a weakly prime, because it can be changed into another prime (61115491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30557748 + 30557749.

It is an arithmetic number, because the mean of its divisors is an integer number (30557749).

Almost surely, 2^61115497 is an apocalyptic number.

It is an amenable number.

61115497 is a deficient number, since it is larger than the sum of its proper divisors (1).

61115497 is an equidigital number, since it uses as much as digits as its factorization.

61115497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 34.

The square root of 61115497 is about 7817.6401170686. The cubic root of 61115497 is about 393.8980062723.

The spelling of 61115497 in words is "sixty-one million, one hundred fifteen thousand, four hundred ninety-seven".