53351891 has 8 divisors (see below), whose sum is σ = 54957120. Its totient is φ = 51755328.

The previous prime is 53351887. The next prime is 53351911. The reversal of 53351891 is 19815335.

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

It is a cyclic number.

It is not a de Polignac number, because 53351891 - 2² = 53351887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53351821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11615 + ... + 15543.

It is an arithmetic number, because the mean of its divisors is an integer number (6869640).

Almost surely, 2^53351891 is an apocalyptic number.

53351891 is a deficient number, since it is larger than the sum of its proper divisors (1605229).

53351891 is a wasteful number, since it uses less digits than its factorization.

53351891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4333.

The product of its digits is 16200, while the sum is 35.

The square root of 53351891 is about 7304.2378794779. The cubic root of 53351891 is about 376.4580650720.

The spelling of 53351891 in words is "fifty-three million, three hundred fifty-one thousand, eight hundred ninety-one".