61505146 has 8 divisors (see below), whose sum is σ = 92291220. Its totient is φ = 30741408.

The previous prime is 61505131. The next prime is 61505149. The reversal of 61505146 is 64150516.

It can be written as a sum of positive squares in 2 ways, for example, as 61449921 + 55225 = 7839^2 + 235^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (61505149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6760 + ... + 12988.

Almost surely, 2^61505146 is an apocalyptic number.

61505146 is a deficient number, since it is larger than the sum of its proper divisors (30786074).

61505146 is a wasteful number, since it uses less digits than its factorization.

61505146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11168.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 61505146 is about 7842.5216607925. The cubic root of 61505146 is about 394.7333477785.

The spelling of 61505146 in words is "sixty-one million, five hundred five thousand, one hundred forty-six".