61155474 has 8 divisors (see below), whose sum is σ = 122310960. Its totient is φ = 20385156.

The previous prime is 61155383. The next prime is 61155491. The reversal of 61155474 is 47455116.

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

61155474 is an admirable 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 in 3 ways as a sum of consecutive naturals, for example, 5096284 + ... + 5096295.

It is an arithmetic number, because the mean of its divisors is an integer number (15288870).

Almost surely, 2^61155474 is an apocalyptic number.

61155474 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61155474 is a wasteful number, since it uses less digits than its factorization.

61155474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10192584.

The product of its digits is 16800, while the sum is 33.

The square root of 61155474 is about 7820.1965448446. The cubic root of 61155474 is about 393.9838733554.

The spelling of 61155474 in words is "sixty-one million, one hundred fifty-five thousand, four hundred seventy-four".