402522151 has 4 divisors (see below), whose sum is σ = 404607952. Its totient is φ = 400436352.

The previous prime is 402522139. The next prime is 402522187. The reversal of 402522151 is 151225204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402522151 - 2¹¹ = 402520103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402522101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1042611 + ... + 1042996.

It is an arithmetic number, because the mean of its divisors is an integer number (101151988).

Almost surely, 2^402522151 is an apocalyptic number.

402522151 is a deficient number, since it is larger than the sum of its proper divisors (2085801).

402522151 is a wasteful number, since it uses less digits than its factorization.

402522151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085800.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 402522151 is about 20062.9546926668. The cubic root of 402522151 is about 738.3516701716.

Adding to 402522151 its reverse (151225204), we get a palindrome (553747355).

The spelling of 402522151 in words is "four hundred two million, five hundred twenty-two thousand, one hundred fifty-one".