61155653 has 16 divisors (see below), whose sum is σ = 68361216. Its totient is φ = 54328320.

The previous prime is 61155631. The next prime is 61155667. The reversal of 61155653 is 35655116.

It is a cyclic number.

It is not a de Polignac number, because 61155653 - 2¹⁰ = 61154629 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 (61155553) 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, 105701 + ... + 106277.

It is an arithmetic number, because the mean of its divisors is an integer number (4272576).

Almost surely, 2^61155653 is an apocalyptic number.

It is an amenable number.

61155653 is a deficient number, since it is larger than the sum of its proper divisors (7205563).

61155653 is a wasteful number, since it uses less digits than its factorization.

61155653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884.

The product of its digits is 13500, while the sum is 32.

The square root of 61155653 is about 7820.2079895614. The cubic root of 61155653 is about 393.9842577475.

The spelling of 61155653 in words is "sixty-one million, one hundred fifty-five thousand, six hundred fifty-three".