51445402 has 8 divisors (see below), whose sum is σ = 77212512. Its totient is φ = 25707900.

The previous prime is 51445357. The next prime is 51445421. The reversal of 51445402 is 20454415.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2374 + ... + 10417.

It is an arithmetic number, because the mean of its divisors is an integer number (9651564).

Almost surely, 2^51445402 is an apocalyptic number.

51445402 is a deficient number, since it is larger than the sum of its proper divisors (25767110).

51445402 is a wasteful number, since it uses less digits than its factorization.

51445402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14804.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 51445402 is about 7172.5450155436. The cubic root of 51445402 is about 371.9194192827.

Adding to 51445402 its reverse (20454415), we get a palindrome (71899817).

The spelling of 51445402 in words is "fifty-one million, four hundred forty-five thousand, four hundred two".