61153155 has 48 divisors (see below), whose sum is σ = 122653440. Its totient is φ = 27607104.

The previous prime is 61153151. The next prime is 61153163. The reversal of 61153155 is 55135116.

It is not a de Polignac number, because 61153155 - 2² = 61153151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61153151) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24976 + ... + 27314.

It is an arithmetic number, because the mean of its divisors is an integer number (2555280).

Almost surely, 2^61153155 is an apocalyptic number.

61153155 is an abundant number, since it is smaller than the sum of its proper divisors (61500285).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61153155 is a wasteful number, since it uses less digits than its factorization.

61153155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440 (or 2437 counting only the distinct ones).

The product of its digits is 2250, while the sum is 27.

The square root of 61153155 is about 7820.0482735083. The cubic root of 61153155 is about 393.9788933698.

The spelling of 61153155 in words is "sixty-one million, one hundred fifty-three thousand, one hundred fifty-five".