51469369 has 16 divisors (see below), whose sum is σ = 60037120. Its totient is φ = 43215120.

The previous prime is 51469357. The next prime is 51469381. The reversal of 51469369 is 96396415.

It is an interprime number because it is at equal distance from previous prime (51469357) and next prime (51469381).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51469369 is a prime.

It is a super-2 number, since 2×51469369² = 5298191890516322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51469349) 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, 89854 + ... + 90424.

It is an arithmetic number, because the mean of its divisors is an integer number (3752320).

Almost surely, 2^51469369 is an apocalyptic number.

It is an amenable number.

51469369 is a deficient number, since it is larger than the sum of its proper divisors (8567751).

51469369 is a wasteful number, since it uses less digits than its factorization.

51469369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820.

The product of its digits is 174960, while the sum is 43.

The square root of 51469369 is about 7174.2155668756. The cubic root of 51469369 is about 371.9771659974.

The spelling of 51469369 in words is "fifty-one million, four hundred sixty-nine thousand, three hundred sixty-nine".