61155315 has 48 divisors (see below), whose sum is σ = 115341408. Its totient is φ = 29795328.

The previous prime is 61155271. The next prime is 61155349. The reversal of 61155315 is 51355116.

It is not a de Polignac number, because 61155315 - 2⁶ = 61155251 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62107 + ... + 63083.

It is an arithmetic number, because the mean of its divisors is an integer number (2402946).

Almost surely, 2^61155315 is an apocalyptic number.

61155315 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61155315 is a deficient number, since it is larger than the sum of its proper divisors (54186093).

61155315 is a wasteful number, since it uses less digits than its factorization.

61155315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108 (or 1105 counting only the distinct ones).

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

The square root of 61155315 is about 7820.1863788531. The cubic root of 61155315 is about 393.9835319115.

The spelling of 61155315 in words is "sixty-one million, one hundred fifty-five thousand, three hundred fifteen".