51452415 has 40 divisors (see below), whose sum is σ = 105415200. Its totient is φ = 23519808.

The previous prime is 51452411. The next prime is 51452419. The reversal of 51452415 is 51425415.

It is an interprime number because it is at equal distance from previous prime (51452411) and next prime (51452419).

It is not a de Polignac number, because 51452415 - 2² = 51452411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51452411) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6240 + ... + 11909.

It is an arithmetic number, because the mean of its divisors is an integer number (2635380).

Almost surely, 2^51452415 is an apocalyptic number.

51452415 is an abundant number, since it is smaller than the sum of its proper divisors (53962785).

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

51452415 is a wasteful number, since it uses less digits than its factorization.

51452415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18173 (or 18164 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 51452415 is about 7173.0338769589. The cubic root of 51452415 is about 371.9363184436.

Subtracting from 51452415 its reverse (51425415), we obtain a cube (27000 = 30³).

The spelling of 51452415 in words is "fifty-one million, four hundred fifty-two thousand, four hundred fifteen".