61154897 has 2 divisors, whose sum is σ = 61154898. Its totient is φ = 61154896.

The previous prime is 61154869. The next prime is 61154917. The reversal of 61154897 is 79845116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41165056 + 19989841 = 6416^2 + 4471^2 .

It is a cyclic number.

It is not a de Polignac number, because 61154897 - 2⁶ = 61154833 is a prime.

It is not a weakly prime, because it can be changed into another prime (61154867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30577448 + 30577449.

It is an arithmetic number, because the mean of its divisors is an integer number (30577449).

Almost surely, 2^61154897 is an apocalyptic number.

It is an amenable number.

61154897 is a deficient number, since it is larger than the sum of its proper divisors (1).

61154897 is an equidigital number, since it uses as much as digits as its factorization.

61154897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 41.

The square root of 61154897 is about 7820.1596531017. The cubic root of 61154897 is about 393.9826342763.

The spelling of 61154897 in words is "sixty-one million, one hundred fifty-four thousand, eight hundred ninety-seven".