510001401 has 32 divisors (see below), whose sum is σ = 880983040. Its totient is φ = 254850624.

The previous prime is 510001399. The next prime is 510001403. The reversal of 510001401 is 104100015.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (510001399) and next prime (510001403).

It is not a de Polignac number, because 510001401 - 2¹ = 510001399 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (510001403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43975 + ... + 54348.

It is an arithmetic number, because the mean of its divisors is an integer number (27530720).

Almost surely, 2^510001401 is an apocalyptic number.

It is an amenable number.

510001401 is a deficient number, since it is larger than the sum of its proper divisors (370981639).

510001401 is a wasteful number, since it uses less digits than its factorization.

510001401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98365.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 510001401 is about 22583.2105999125. The cubic root of 510001401 is about 798.9577056387.

Adding to 510001401 its reverse (104100015), we get a palindrome (614101416).

The spelling of 510001401 in words is "five hundred ten million, one thousand, four hundred one".