51494401 has 32 divisors (see below), whose sum is σ = 65318400. Its totient is φ = 39621120.

The previous prime is 51494393. The next prime is 51494413. The reversal of 51494401 is 10449415.

It is not a de Polignac number, because 51494401 - 2³ = 51494393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51494401.

It is not an unprimeable number, because it can be changed into a prime (51494461) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 191295 + ... + 191563.

It is an arithmetic number, because the mean of its divisors is an integer number (2041200).

Almost surely, 2^51494401 is an apocalyptic number.

It is an amenable number.

51494401 is a deficient number, since it is larger than the sum of its proper divisors (13823999).

51494401 is a wasteful number, since it uses less digits than its factorization.

51494401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 51494401 is about 7175.9599357856. The cubic root of 51494401 is about 372.0374596147.

The spelling of 51494401 in words is "fifty-one million, four hundred ninety-four thousand, four hundred one".