51347553 has 8 divisors (see below), whose sum is σ = 68648448. Its totient is φ = 34139184.

The previous prime is 51347533. The next prime is 51347579. The reversal of 51347553 is 35574315.

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

It is not a de Polignac number, because 51347553 - 2⁶ = 51347489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51347533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21825 + ... + 24062.

It is an arithmetic number, because the mean of its divisors is an integer number (8581056).

Almost surely, 2^51347553 is an apocalyptic number.

It is an amenable number.

51347553 is a deficient number, since it is larger than the sum of its proper divisors (17300895).

51347553 is a wasteful number, since it uses less digits than its factorization.

51347553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46263.

The product of its digits is 31500, while the sum is 33.

The square root of 51347553 is about 7165.7206895050. The cubic root of 51347553 is about 371.6834730905.

The spelling of 51347553 in words is "fifty-one million, three hundred forty-seven thousand, five hundred fifty-three".