61054391 has 8 divisors (see below), whose sum is σ = 65174400. Its totient is φ = 57025080.

The previous prime is 61054387. The next prime is 61054393. The reversal of 61054391 is 19345016.

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

It is not a de Polignac number, because 61054391 - 2² = 61054387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61054393) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 21281 + ... + 23978.

It is an arithmetic number, because the mean of its divisors is an integer number (8146800).

Almost surely, 2^61054391 is an apocalyptic number.

61054391 is a deficient number, since it is larger than the sum of its proper divisors (4120009).

61054391 is a wasteful number, since it uses less digits than its factorization.

61054391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45349.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 61054391 is about 7813.7309270284. The cubic root of 61054391 is about 393.7666835628.

The spelling of 61054391 in words is "sixty-one million, fifty-four thousand, three hundred ninety-one".