5254655121 has 27 divisors (see below), whose sum is σ = 7718774427. Its totient is φ = 3444677280.

The previous prime is 5254655089. The next prime is 5254655123. The reversal of 5254655121 is 1215564525.

The square root of 5254655121 is 72489.

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

5254655121 is a `hidden beast` number, since 52 + 54 + 6 + 551 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2982798225 + 2271856896 = 54615^2 + 47664^2 .

It is not a de Polignac number, because 5254655121 - 2⁵ = 5254655089 is a prime.

It is a super-2 number, since 2×5254655121² = 55222800881303049282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5254655123) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 15874926 + ... + 15875256.

Almost surely, 2^5254655121 is an apocalyptic number.

5254655121 is the 72489-th square number.

5254655121 is the 36245-th centered octagonal number.

It is an amenable number.

5254655121 is a deficient number, since it is larger than the sum of its proper divisors (2464119306).

5254655121 is an frugal number, since it uses more digits than its factorization.

5254655121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814 (or 407 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

The cubic root of 5254655121 is about 1738.5268635347.

Multiplying 5254655121 by its sum of digits (36), we get a square (189167584356 = 434934²).

The spelling of 5254655121 in words is "five billion, two hundred fifty-four million, six hundred fifty-five thousand, one hundred twenty-one".