51919450 has 24 divisors (see below), whose sum is σ = 105350400. Its totient is φ = 18879600.

The previous prime is 51919393. The next prime is 51919459. The reversal of 51919450 is 5491915.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51919459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46650 + ... + 47749.

It is an arithmetic number, because the mean of its divisors is an integer number (4389600).

Almost surely, 2^51919450 is an apocalyptic number.

51919450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51919450 is an abundant number, since it is smaller than the sum of its proper divisors (53430950).

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

51919450 is a wasteful number, since it uses less digits than its factorization.

51919450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94422 (or 94417 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 51919450 is about 7205.5152487522. The cubic root of 51919450 is about 373.0582893043.

It can be divided in two parts, 5191 and 9450, that added together give a palindrome (14641).

The spelling of 51919450 in words is "fifty-one million, nine hundred nineteen thousand, four hundred fifty".