6402151 has 16 divisors (see below), whose sum is σ = 7641088. Its totient is φ = 5248800.

The previous prime is 6402139. The next prime is 6402157. The reversal of 6402151 is 1512046.

It is a 5-Lehmer number, since φ(6402151) divides (6402151-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 6402151 - 2¹⁵ = 6369383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6402157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35281 + ... + 35461.

It is an arithmetic number, because the mean of its divisors is an integer number (477568).

Almost surely, 2^6402151 is an apocalyptic number.

6402151 is a deficient number, since it is larger than the sum of its proper divisors (1238937).

6402151 is a wasteful number, since it uses less digits than its factorization.

6402151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 6402151 is about 2530.2472211229. The cubic root of 6402151 is about 185.6843511346.

Adding to 6402151 its reverse (1512046), we get a palindrome (7914197).

The spelling of 6402151 in words is "six million, four hundred two thousand, one hundred fifty-one".