61542166 has 8 divisors (see below), whose sum is σ = 105500880. Its totient is φ = 26375208.

The previous prime is 61542157. The next prime is 61542167. The reversal of 61542166 is 66124516.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61542167) 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, 2197921 + ... + 2197948.

It is an arithmetic number, because the mean of its divisors is an integer number (13187610).

Almost surely, 2^61542166 is an apocalyptic number.

61542166 is a deficient number, since it is larger than the sum of its proper divisors (43958714).

61542166 is a wasteful number, since it uses less digits than its factorization.

61542166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4395878.

The product of its digits is 8640, while the sum is 31.

The square root of 61542166 is about 7844.8815159950. The cubic root of 61542166 is about 394.8125286742.

The spelling of 61542166 in words is "sixty-one million, five hundred forty-two thousand, one hundred sixty-six".