51409452 has 12 divisors (see below), whose sum is σ = 119955416. Its totient is φ = 17136480.

The previous prime is 51409451. The next prime is 51409469. The reversal of 51409452 is 25490415.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (51409451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2142049 + ... + 2142072.

Almost surely, 2^51409452 is an apocalyptic number.

It is an amenable number.

51409452 is an abundant number, since it is smaller than the sum of its proper divisors (68545964).

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

51409452 is a wasteful number, since it uses less digits than its factorization.

51409452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4284128 (or 4284126 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 51409452 is about 7170.0384936205. The cubic root of 51409452 is about 371.8327667783.

Adding to 51409452 its reverse (25490415), we get a palindrome (76899867).

The spelling of 51409452 in words is "fifty-one million, four hundred nine thousand, four hundred fifty-two".