51469340 has 24 divisors (see below), whose sum is σ = 116400480. Its totient is φ = 19003968.

The previous prime is 51469321. The next prime is 51469349. The reversal of 51469340 is 4396415.

It is a junction number, because it is equal to n+sod(n) for n = 51469297 and 51469306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51469349) 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 7 ways as a sum of consecutive naturals, for example, 98720 + ... + 99239.

It is an arithmetic number, because the mean of its divisors is an integer number (4850020).

Almost surely, 2^51469340 is an apocalyptic number.

It is an amenable number.

51469340 is an abundant number, since it is smaller than the sum of its proper divisors (64931140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51469340 is a wasteful number, since it uses less digits than its factorization.

51469340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197981 (or 197979 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 51469340 is about 7174.2135457484. The cubic root of 51469340 is about 371.9770961348.

The spelling of 51469340 in words is "fifty-one million, four hundred sixty-nine thousand, three hundred forty".