402555233 has 2 divisors, whose sum is σ = 402555234. Its totient is φ = 402555232.

The previous prime is 402555191. The next prime is 402555281. The reversal of 402555233 is 332555204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313006864 + 89548369 = 17692^2 + 9463^2 .

It is a cyclic number.

It is not a de Polignac number, because 402555233 - 2²² = 398360929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402555196 and 402555205.

It is not a weakly prime, because it can be changed into another prime (402555133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201277616 + 201277617.

It is an arithmetic number, because the mean of its divisors is an integer number (201277617).

Almost surely, 2^402555233 is an apocalyptic number.

It is an amenable number.

402555233 is a deficient number, since it is larger than the sum of its proper divisors (1).

402555233 is an equidigital number, since it uses as much as digits as its factorization.

402555233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 29.

The square root of 402555233 is about 20063.7791305626. The cubic root of 402555233 is about 738.3718971999.

Subtracting from 402555233 its sum of digits (29), we obtain a palindrome (402555204).

The spelling of 402555233 in words is "four hundred two million, five hundred fifty-five thousand, two hundred thirty-three".