51520455010 has 32 divisors (see below), whose sum is σ = 95266931760. Its totient is φ = 20046212352.

The previous prime is 51520454989. The next prime is 51520455029. The reversal of 51520455010 is 1055402515.

It can be written as a sum of positive squares in 8 ways, for example, as 42803058321 + 8717396689 = 206889^2 + 93367^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51520455010.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1700676 + ... + 1730704.

Almost surely, 2^51520455010 is an apocalyptic number.

51520455010 is a deficient number, since it is larger than the sum of its proper divisors (43746476750).

51520455010 is a wasteful number, since it uses less digits than its factorization.

51520455010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34710.

The product of its (nonzero) digits is 5000, while the sum is 28.

Adding to 51520455010 its reverse (1055402515), we get a palindrome (52575857525).

The spelling of 51520455010 in words is "fifty-one billion, five hundred twenty million, four hundred fifty-five thousand, ten".