61154012 has 12 divisors (see below), whose sum is σ = 107702280. Its totient is φ = 30381936.

The previous prime is 61153999. The next prime is 61154021. The reversal of 61154012 is 21045116.

61154012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61154012² = 7479626367392288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 48062 + ... + 49317.

It is an arithmetic number, because the mean of its divisors is an integer number (8975190).

Almost surely, 2^61154012 is an apocalyptic number.

It is an amenable number.

61154012 is a deficient number, since it is larger than the sum of its proper divisors (46548268).

61154012 is a wasteful number, since it uses less digits than its factorization.

61154012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97540 (or 97538 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 61154012 is about 7820.1030683745. The cubic root of 61154012 is about 393.9807337672.

Adding to 61154012 its reverse (21045116), we get a palindrome (82199128).

The spelling of 61154012 in words is "sixty-one million, one hundred fifty-four thousand, twelve".