401502217 has 4 divisors (see below), whose sum is σ = 411294996. Its totient is φ = 391709440.

The previous prime is 401502193. The next prime is 401502251. The reversal of 401502217 is 712205104.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 48776256 + 352725961 = 6984^2 + 18781^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401502217 is a prime.

It is a super-2 number, since 2×401502217² = 322408060511830178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401502287) 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, 4896328 + ... + 4896409.

It is an arithmetic number, because the mean of its divisors is an integer number (102823749).

Almost surely, 2^401502217 is an apocalyptic number.

It is an amenable number.

401502217 is a deficient number, since it is larger than the sum of its proper divisors (9792779).

401502217 is an equidigital number, since it uses as much as digits as its factorization.

401502217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9792778.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 401502217 is about 20037.5202308070. The cubic root of 401502217 is about 737.7275165900.

The spelling of 401502217 in words is "four hundred one million, five hundred two thousand, two hundred seventeen".