61550494 has 4 divisors (see below), whose sum is σ = 92325744. Its totient is φ = 30775246.

The previous prime is 61550479. The next prime is 61550527. The reversal of 61550494 is 49405516.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15387622 + ... + 15387625.

It is an arithmetic number, because the mean of its divisors is an integer number (23081436).

Almost surely, 2^61550494 is an apocalyptic number.

61550494 is a deficient number, since it is larger than the sum of its proper divisors (30775250).

61550494 is a wasteful number, since it uses less digits than its factorization.

61550494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30775249.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 61550494 is about 7845.4122899947. The cubic root of 61550494 is about 394.8303367921.

The spelling of 61550494 in words is "sixty-one million, five hundred fifty thousand, four hundred ninety-four".