61154272 has 24 divisors (see below), whose sum is σ = 124551000. Its totient is φ = 29522304.

The previous prime is 61154257. The next prime is 61154273. The reversal of 61154272 is 27245116.

It is a self number, because there is not a number n which added to its sum of digits gives 61154272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61154273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32022 + ... + 33877.

It is an arithmetic number, because the mean of its divisors is an integer number (5189625).

Almost surely, 2^61154272 is an apocalyptic number.

It is an amenable number.

61154272 is an abundant number, since it is smaller than the sum of its proper divisors (63396728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61154272 is a wasteful number, since it uses less digits than its factorization.

61154272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65938 (or 65930 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 61154272 is about 7820.1196921786. The cubic root of 61154272 is about 393.9812921108.

Adding to 61154272 its reverse (27245116), we get a palindrome (88399388).

The spelling of 61154272 in words is "sixty-one million, one hundred fifty-four thousand, two hundred seventy-two".