61091152 has 20 divisors (see below), whose sum is σ = 118548340. Its totient is φ = 30498048.

The previous prime is 61091143. The next prime is 61091171. The reversal of 61091152 is 25119016.

It can be written as a sum of positive squares in 2 ways, for example, as 59845696 + 1245456 = 7736^2 + 1116^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9124 + ... + 14332.

It is an arithmetic number, because the mean of its divisors is an integer number (5927417).

Almost surely, 2^61091152 is an apocalyptic number.

It is an amenable number.

61091152 is a deficient number, since it is larger than the sum of its proper divisors (57457188).

61091152 is a wasteful number, since it uses less digits than its factorization.

61091152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5950 (or 5944 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 61091152 is about 7816.0829064180. The cubic root of 61091152 is about 393.8456970053.

The spelling of 61091152 in words is "sixty-one million, ninety-one thousand, one hundred fifty-two".