51603937225 has 9 divisors (see below), whose sum is σ = 63990290613. Its totient is φ = 41282241120.

The previous prime is 51603937183. The next prime is 51603937267. The reversal of 51603937225 is 52273930615.

The square root of 51603937225 is 227165.

It is a perfect power (a square), and thus also a powerful number.

51603937225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51603937183) and next prime (51603937267).

It can be written as a sum of positive squares in 4 ways, for example, as 14953132089 + 36650805136 = 122283^2 + 191444^2 .

It is not a de Polignac number, because 51603937225 - 2¹¹ = 51603935177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1113109 + ... + 1158541.

Almost surely, 2^51603937225 is an apocalyptic number.

51603937225 is the 227165-th square number.

51603937225 is the 113583-rd centered octagonal number.

It is an amenable number.

51603937225 is a deficient number, since it is larger than the sum of its proper divisors (12386353388).

51603937225 is an frugal number, since it uses more digits than its factorization.

51603937225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90876 (or 45438 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 43.

The spelling of 51603937225 in words is "fifty-one billion, six hundred three million, nine hundred thirty-seven thousand, two hundred twenty-five".