51346553 has 4 divisors (see below), whose sum is σ = 51415140. Its totient is φ = 51277968.

The previous prime is 51346543. The next prime is 51346591. The reversal of 51346553 is 35564315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34140649 + 17205904 = 5843^2 + 4148^2 .

It is a cyclic number.

It is not a de Polignac number, because 51346553 - 2⁸ = 51346297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51346543) 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, 33158 + ... + 34671.

It is an arithmetic number, because the mean of its divisors is an integer number (12853785).

Almost surely, 2^51346553 is an apocalyptic number.

It is an amenable number.

51346553 is a deficient number, since it is larger than the sum of its proper divisors (68587).

51346553 is an equidigital number, since it uses as much as digits as its factorization.

51346553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68586.

The product of its digits is 27000, while the sum is 32.

The square root of 51346553 is about 7165.6509125131. The cubic root of 51346553 is about 371.6810602142.

The spelling of 51346553 in words is "fifty-one million, three hundred forty-six thousand, five hundred fifty-three".