61159040 has 32 divisors (see below), whose sum is σ = 146209860. Its totient is φ = 24463360.

The previous prime is 61159037. The next prime is 61159051. The reversal of 61159040 is 4095116.

It can be written as a sum of positive squares in 2 ways, for example, as 60341824 + 817216 = 7768^2 + 904^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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, 47141 + ... + 48420.

Almost surely, 2^61159040 is an apocalyptic number.

It is an amenable number.

61159040 is an abundant number, since it is smaller than the sum of its proper divisors (85050820).

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

61159040 is an equidigital number, since it uses as much as digits as its factorization.

61159040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95580 (or 95568 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 61159040 is about 7820.4245409057. The cubic root of 61159040 is about 393.9915309920.

The spelling of 61159040 in words is "sixty-one million, one hundred fifty-nine thousand, forty".