61092557 has 6 divisors (see below), whose sum is σ = 61425198. Its totient is φ = 60761112.

The previous prime is 61092541. The next prime is 61092569. The reversal of 61092557 is 75529016.

61092557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 37773316 + 23319241 = 6146^2 + 4829^2 .

It is not a de Polignac number, because 61092557 - 2⁴ = 61092541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61092257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138944 + ... + 139382.

It is an arithmetic number, because the mean of its divisors is an integer number (10237533).

Almost surely, 2^61092557 is an apocalyptic number.

It is an amenable number.

61092557 is a deficient number, since it is larger than the sum of its proper divisors (332641).

61092557 is an frugal number, since it uses more digits than its factorization.

61092557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 61092557 is about 7816.1727846818. The cubic root of 61092557 is about 393.8487162585.

The spelling of 61092557 in words is "sixty-one million, ninety-two thousand, five hundred fifty-seven".