51455414 has 4 divisors (see below), whose sum is σ = 77183124. Its totient is φ = 25727706.

The previous prime is 51455399. The next prime is 51455423. The reversal of 51455414 is 41455415.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41455415 = 5 ⋅8291083.

It is a super-2 number, since 2×51455414² = 5295319259822792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12863852 + ... + 12863855.

It is an arithmetic number, because the mean of its divisors is an integer number (19295781).

Almost surely, 2^51455414 is an apocalyptic number.

51455414 is a deficient number, since it is larger than the sum of its proper divisors (25727710).

51455414 is a wasteful number, since it uses less digits than its factorization.

51455414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25727709.

The product of its digits is 8000, while the sum is 29.

The square root of 51455414 is about 7173.2429207437. The cubic root of 51455414 is about 371.9435446373.

Subtracting from 51455414 its reverse (41455415), we obtain a palindrome (9999999).

The spelling of 51455414 in words is "fifty-one million, four hundred fifty-five thousand, four hundred fourteen".