61155130 has 8 divisors (see below), whose sum is σ = 110079252. Its totient is φ = 24462048.

The previous prime is 61155109. The next prime is 61155139. The reversal of 61155130 is 3155116.

It can be written as a sum of positive squares in 2 ways, for example, as 58018689 + 3136441 = 7617^2 + 1771^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (61155139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3057747 + ... + 3057766.

Almost surely, 2^61155130 is an apocalyptic number.

61155130 is a deficient number, since it is larger than the sum of its proper divisors (48924122).

61155130 is a wasteful number, since it uses less digits than its factorization.

61155130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6115520.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 61155130 is about 7820.1745504816. The cubic root of 61155130 is about 393.9831346333.

The spelling of 61155130 in words is "sixty-one million, one hundred fifty-five thousand, one hundred thirty".