51326949 has 16 divisors (see below), whose sum is σ = 70180992. Its totient is φ = 33354048.

The previous prime is 51326929. The next prime is 51326959. The reversal of 51326949 is 94962315.

It is not a de Polignac number, because 51326949 - 2¹¹ = 51324901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51326929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25587 + ... + 27519.

It is an arithmetic number, because the mean of its divisors is an integer number (4386312).

Almost surely, 2^51326949 is an apocalyptic number.

It is an amenable number.

51326949 is a deficient number, since it is larger than the sum of its proper divisors (18854043).

51326949 is a wasteful number, since it uses less digits than its factorization.

51326949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156.

The product of its digits is 58320, while the sum is 39.

The square root of 51326949 is about 7164.2828671124. The cubic root of 51326949 is about 371.6337518582.

The spelling of 51326949 in words is "fifty-one million, three hundred twenty-six thousand, nine hundred forty-nine".