51342465 has 32 divisors (see below), whose sum is σ = 91566720. Its totient is φ = 24413184.

The previous prime is 51342461. The next prime is 51342481. The reversal of 51342465 is 56424315.

It is not a de Polignac number, because 51342465 - 2² = 51342461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51342461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 454 + ... + 10143.

It is an arithmetic number, because the mean of its divisors is an integer number (2861460).

Almost surely, 2^51342465 is an apocalyptic number.

It is an amenable number.

51342465 is a deficient number, since it is larger than the sum of its proper divisors (40224255).

51342465 is a wasteful number, since it uses less digits than its factorization.

51342465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10641.

The product of its digits is 14400, while the sum is 30.

The square root of 51342465 is about 7165.3656571036. The cubic root of 51342465 is about 371.6711960499.

The spelling of 51342465 in words is "fifty-one million, three hundred forty-two thousand, four hundred sixty-five".