61148013 has 16 divisors (see below), whose sum is σ = 85162560. Its totient is φ = 38987136.

The previous prime is 61147991. The next prime is 61148051. The reversal of 61148013 is 31084116.

It is not a de Polignac number, because 61148013 - 2⁵ = 61147981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61148713) 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, 1881 + ... + 11217.

It is an arithmetic number, because the mean of its divisors is an integer number (5322660).

Almost surely, 2^61148013 is an apocalyptic number.

It is an amenable number.

61148013 is a deficient number, since it is larger than the sum of its proper divisors (24014547).

61148013 is a wasteful number, since it uses less digits than its factorization.

61148013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9436.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 61148013 is about 7819.7194962479. The cubic root of 61148013 is about 393.9678506239.

The spelling of 61148013 in words is "sixty-one million, one hundred forty-eight thousand, thirteen".