51349401 has 48 divisors (see below), whose sum is σ = 82892160. Its totient is φ = 30481920.

The previous prime is 51349399. The next prime is 51349433. The reversal of 51349401 is 10494315.

It is not a de Polignac number, because 51349401 - 2¹ = 51349399 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51349471) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 314946 + ... + 315108.

It is an arithmetic number, because the mean of its divisors is an integer number (1726920).

Almost surely, 2^51349401 is an apocalyptic number.

51349401 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

51349401 is a deficient number, since it is larger than the sum of its proper divisors (31542759).

51349401 is a wasteful number, since it uses less digits than its factorization.

51349401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 51349401 is about 7165.8496355980. The cubic root of 51349401 is about 371.6879320035.

It can be divided in two parts, 5134 and 9401, that added together give a triangular number (14535 = T₁₇₀).

The spelling of 51349401 in words is "fifty-one million, three hundred forty-nine thousand, four hundred one".