61494278 has 4 divisors (see below), whose sum is σ = 92241420. Its totient is φ = 30747138.

The previous prime is 61494269. The next prime is 61494281. The reversal of 61494278 is 87249416.

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 (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15373568 + ... + 15373571.

It is an arithmetic number, because the mean of its divisors is an integer number (23060355).

Almost surely, 2^61494278 is an apocalyptic number.

61494278 is a deficient number, since it is larger than the sum of its proper divisors (30747142).

61494278 is a wasteful number, since it uses less digits than its factorization.

61494278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30747141.

The product of its digits is 96768, while the sum is 41.

The square root of 61494278 is about 7841.8287407976. The cubic root of 61494278 is about 394.7100965277.

The spelling of 61494278 in words is "sixty-one million, four hundred ninety-four thousand, two hundred seventy-eight".