5515397 has 2 divisors, whose sum is σ = 5515398. Its totient is φ = 5515396.

The previous prime is 5515357. The next prime is 5515399. The reversal of 5515397 is 7935155.

5515397 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5354596 + 160801 = 2314^2 + 401^2 .

It is a cyclic number.

It is not a de Polignac number, because 5515397 - 2⁶ = 5515333 is a prime.

Together with 5515399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5515399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2757698 + 2757699.

It is an arithmetic number, because the mean of its divisors is an integer number (2757699).

Almost surely, 2^5515397 is an apocalyptic number.

It is an amenable number.

5515397 is a deficient number, since it is larger than the sum of its proper divisors (1).

5515397 is an equidigital number, since it uses as much as digits as its factorization.

5515397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23625, while the sum is 35.

The square root of 5515397 is about 2348.4882371432. The cubic root of 5515397 is about 176.6819807934.

The spelling of 5515397 in words is "five million, five hundred fifteen thousand, three hundred ninety-seven".