5403388121 has 2 divisors, whose sum is σ = 5403388122. Its totient is φ = 5403388120.

The previous prime is 5403388117. The next prime is 5403388139. The reversal of 5403388121 is 1218833045.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3607323721 + 1796064400 = 60061^2 + 42380^2 .

It is a cyclic number.

It is not a de Polignac number, because 5403388121 - 2² = 5403388117 is a prime.

It is not a weakly prime, because it can be changed into another prime (5403388021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2701694060 + 2701694061.

It is an arithmetic number, because the mean of its divisors is an integer number (2701694061).

Almost surely, 2^5403388121 is an apocalyptic number.

It is an amenable number.

5403388121 is a deficient number, since it is larger than the sum of its proper divisors (1).

5403388121 is an equidigital number, since it uses as much as digits as its factorization.

5403388121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 5403388121 is about 73507.7419119918. The cubic root of 5403388121 is about 1754.7774893965. Note that the first 3 decimals are identical.

The spelling of 5403388121 in words is "five billion, four hundred three million, three hundred eighty-eight thousand, one hundred twenty-one".