61102549 has 2 divisors, whose sum is σ = 61102550. Its totient is φ = 61102548.

The previous prime is 61102511. The next prime is 61102553. The reversal of 61102549 is 94520116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53363025 + 7739524 = 7305^2 + 2782^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61102549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61102579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30551274 + 30551275.

It is an arithmetic number, because the mean of its divisors is an integer number (30551275).

Almost surely, 2^61102549 is an apocalyptic number.

It is an amenable number.

61102549 is a deficient number, since it is larger than the sum of its proper divisors (1).

61102549 is an equidigital number, since it uses as much as digits as its factorization.

61102549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 61102549 is about 7816.8119460558. The cubic root of 61102549 is about 393.8701870783.

The spelling of 61102549 in words is "sixty-one million, one hundred two thousand, five hundred forty-nine".