61261153 has 4 divisors (see below), whose sum is σ = 61667008. Its totient is φ = 60855300.

The previous prime is 61261097. The next prime is 61261157. The reversal of 61261153 is 35116216.

61261153 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61261153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61261157) 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 3 ways as a sum of consecutive naturals, for example, 202701 + ... + 203002.

It is an arithmetic number, because the mean of its divisors is an integer number (15416752).

Almost surely, 2^61261153 is an apocalyptic number.

It is an amenable number.

61261153 is a deficient number, since it is larger than the sum of its proper divisors (405855).

61261153 is a wasteful number, since it uses less digits than its factorization.

61261153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405854.

The product of its digits is 1080, while the sum is 25.

The square root of 61261153 is about 7826.9504278486. The cubic root of 61261153 is about 394.2106824986.

Adding to 61261153 its reverse (35116216), we get a palindrome (96377369).

The spelling of 61261153 in words is "sixty-one million, two hundred sixty-one thousand, one hundred fifty-three".