61015011 has 16 divisors (see below), whose sum is σ = 83734560. Its totient is φ = 39495680.

The previous prime is 61015007. The next prime is 61015013. The reversal of 61015011 is 11051016.

61015011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 61015011 - 2² = 61015007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61015013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27595 + ... + 29723.

It is an arithmetic number, because the mean of its divisors is an integer number (5233410).

Almost surely, 2^61015011 is an apocalyptic number.

61015011 is a deficient number, since it is larger than the sum of its proper divisors (22719549).

61015011 is a wasteful number, since it uses less digits than its factorization.

61015011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406.

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

The square root of 61015011 is about 7811.2105975963. The cubic root of 61015011 is about 393.6820056943.

Adding to 61015011 its reverse (11051016), we get a palindrome (72066027).

The spelling of 61015011 in words is "sixty-one million, fifteen thousand, eleven".