51503441 has 8 divisors (see below), whose sum is σ = 56391744. Its totient is φ = 46649520.

The previous prime is 51503437. The next prime is 51503461. The reversal of 51503441 is 14430515.

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

It is a cyclic number.

It is not a de Polignac number, because 51503441 - 2² = 51503437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51503461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5405 + ... + 11498.

It is an arithmetic number, because the mean of its divisors is an integer number (7048968).

Almost surely, 2^51503441 is an apocalyptic number.

It is an amenable number.

51503441 is a deficient number, since it is larger than the sum of its proper divisors (4888303).

51503441 is a wasteful number, since it uses less digits than its factorization.

51503441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17191.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 51503441 is about 7176.5897890293. The cubic root of 51503441 is about 372.0592291131.

Adding to 51503441 its reverse (14430515), we get a palindrome (65933956).

The spelling of 51503441 in words is "fifty-one million, five hundred three thousand, four hundred forty-one".