51544402 has 16 divisors (see below), whose sum is σ = 95159232. Its totient is φ = 20391120.

The previous prime is 51544399. The next prime is 51544417. The reversal of 51544402 is 20444515.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141424 + ... + 141787.

It is an arithmetic number, because the mean of its divisors is an integer number (5947452).

Almost surely, 2^51544402 is an apocalyptic number.

51544402 is a deficient number, since it is larger than the sum of its proper divisors (43614830).

51544402 is a wasteful number, since it uses less digits than its factorization.

51544402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283233.

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

The square root of 51544402 is about 7179.4430146077. The cubic root of 51544402 is about 372.1578366329.

Adding to 51544402 its reverse (20444515), we get a palindrome (71988917).

The spelling of 51544402 in words is "fifty-one million, five hundred forty-four thousand, four hundred two".