5521121237 has 2 divisors, whose sum is σ = 5521121238. Its totient is φ = 5521121236.

The previous prime is 5521121233. The next prime is 5521121317. The reversal of 5521121237 is 7321211255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5008959076 + 512162161 = 70774^2 + 22631^2 .

It is a cyclic number.

It is not a de Polignac number, because 5521121237 - 2² = 5521121233 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5521121233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2760560618 + 2760560619.

It is an arithmetic number, because the mean of its divisors is an integer number (2760560619).

Almost surely, 2^5521121237 is an apocalyptic number.

It is an amenable number.

5521121237 is a deficient number, since it is larger than the sum of its proper divisors (1).

5521121237 is an equidigital number, since it uses as much as digits as its factorization.

5521121237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4200, while the sum is 29.

The square root of 5521121237 is about 74304.2477722505. The cubic root of 5521121237 is about 1767.4308366871.

The spelling of 5521121237 in words is "five billion, five hundred twenty-one million, one hundred twenty-one thousand, two hundred thirty-seven".