61501156 has 12 divisors (see below), whose sum is σ = 108098620. Its totient is φ = 30615840.

The previous prime is 61501093. The next prime is 61501159. The reversal of 61501156 is 65110516.

It can be written as a sum of positive squares in 2 ways, for example, as 55741156 + 5760000 = 7466^2 + 2400^2 .

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 61501156.

It is not an unprimeable number, because it can be changed into a prime (61501159) 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, 32655 + ... + 34486.

Almost surely, 2^61501156 is an apocalyptic number.

It is an amenable number.

61501156 is a deficient number, since it is larger than the sum of its proper divisors (46597464).

61501156 is a wasteful number, since it uses less digits than its factorization.

61501156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67374 (or 67372 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 61501156 is about 7842.2672742007. The cubic root of 61501156 is about 394.7248117983.

The spelling of 61501156 in words is "sixty-one million, five hundred one thousand, one hundred fifty-six".