61542506 has 8 divisors (see below), whose sum is σ = 92867040. Its totient is φ = 30586828.

The previous prime is 61542449. The next prime is 61542529. The reversal of 61542506 is 60524516.

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

It is a zygodrome in base 5.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91796 + ... + 92463.

It is an arithmetic number, because the mean of its divisors is an integer number (11608380).

Almost surely, 2^61542506 is an apocalyptic number.

61542506 is a deficient number, since it is larger than the sum of its proper divisors (31324534).

61542506 is a wasteful number, since it uses less digits than its factorization.

61542506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184428.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 61542506 is about 7844.9031861458. The cubic root of 61542506 is about 394.8132557422.

The spelling of 61542506 in words is "sixty-one million, five hundred forty-two thousand, five hundred six".