51379269 has 8 divisors (see below), whose sum is σ = 68761440. Its totient is φ = 34124976.

The previous prime is 51379267. The next prime is 51379277. The reversal of 51379269 is 96297315.

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

It is not a de Polignac number, because 51379269 - 2¹ = 51379267 is a prime.

It is a super-2 number, since 2×51379269² = 5279658565948722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51379269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51379267) 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, 31027 + ... + 32640.

It is an arithmetic number, because the mean of its divisors is an integer number (8595180).

Almost surely, 2^51379269 is an apocalyptic number.

It is an amenable number.

51379269 is a deficient number, since it is larger than the sum of its proper divisors (17382171).

51379269 is a wasteful number, since it uses less digits than its factorization.

51379269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63939.

The product of its digits is 102060, while the sum is 42.

The square root of 51379269 is about 7167.9333841771. The cubic root of 51379269 is about 371.7599836288.

The spelling of 51379269 in words is "fifty-one million, three hundred seventy-nine thousand, two hundred sixty-nine".