51550052 has 24 divisors (see below), whose sum is σ = 98816760. Its totient is φ = 23421440.

The previous prime is 51550049. The next prime is 51550073. The reversal of 51550052 is 25005515.

It can be written as a sum of positive squares in 4 ways, for example, as 19219456 + 32330596 = 4384^2 + 5686^2 .

It is a super-2 number, since 2×51550052² = 5314815722405408, which contains 22 as substring.

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, 11099 + ... + 15042.

It is an arithmetic number, because the mean of its divisors is an integer number (4117365).

Almost surely, 2^51550052 is an apocalyptic number.

It is an amenable number.

51550052 is a deficient number, since it is larger than the sum of its proper divisors (47266708).

51550052 is a wasteful number, since it uses less digits than its factorization.

51550052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26191 (or 26189 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 23.

The square root of 51550052 is about 7179.8364883889. The cubic root of 51550052 is about 372.1714340678.

Adding to 51550052 its reverse (25005515), we get a palindrome (76555567).

The spelling of 51550052 in words is "fifty-one million, five hundred fifty thousand, fifty-two".