61101015 has 16 divisors (see below), whose sum is σ = 98128896. Its totient is φ = 32464800.

The previous prime is 61101011. The next prime is 61101037. The reversal of 61101015 is 51010116.

It is not a de Polignac number, because 61101015 - 2² = 61101011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 61100985 and 61101003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61101011) 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, 3451 + ... + 11580.

It is an arithmetic number, because the mean of its divisors is an integer number (6133056).

Almost surely, 2^61101015 is an apocalyptic number.

61101015 is a deficient number, since it is larger than the sum of its proper divisors (37027881).

61101015 is a wasteful number, since it uses less digits than its factorization.

61101015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15310.

The product of its (nonzero) digits is 30, while the sum is 15.

The square root of 61101015 is about 7816.7138235962. The cubic root of 61101015 is about 393.8668909696.

Subtracting from 61101015 its product of nonzero digits (30), we obtain a triangular number (61100985 = T₁₁₀₅₄).

The spelling of 61101015 in words is "sixty-one million, one hundred one thousand, fifteen".