61056555 has 16 divisors (see below), whose sum is σ = 111646464. Its totient is φ = 27911520.

The previous prime is 61056551. The next prime is 61056643. The reversal of 61056555 is 55565016.

It is not a de Polignac number, because 61056555 - 2² = 61056551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61056551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290641 + ... + 290850.

It is an arithmetic number, because the mean of its divisors is an integer number (6977904).

Almost surely, 2^61056555 is an apocalyptic number.

61056555 is a deficient number, since it is larger than the sum of its proper divisors (50589909).

61056555 is a wasteful number, since it uses less digits than its factorization.

61056555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581506.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 61056555 is about 7813.8693999836. The cubic root of 61056555 is about 393.7713357046.

The spelling of 61056555 in words is "sixty-one million, fifty-six thousand, five hundred fifty-five".