401526 has 12 divisors (see below), whose sum is σ = 870012. Its totient is φ = 133836.

The previous prime is 401519. The next prime is 401537. The reversal of 401526 is 625104.

It is a happy number.

It is a super-2 number, since 2×401526² = 322446257352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 22307 = 401526 / (4 + 0 + 1 + 5 + 2 + 6).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 401499 and 401508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11136 + ... + 11171.

It is an arithmetic number, because the mean of its divisors is an integer number (72501).

2⁴⁰¹⁵²⁶ is an apocalyptic number.

401526 is an abundant number, since it is smaller than the sum of its proper divisors (468486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401526 is a wasteful number, since it uses less digits than its factorization.

401526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22315 (or 22312 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 401526 is about 633.6607925381. The cubic root of 401526 is about 73.7742082742.

The spelling of 401526 in words is "four hundred one thousand, five hundred twenty-six".