401547 has 8 divisors (see below), whose sum is σ = 539856. Its totient is φ = 265472.

The previous prime is 401539. The next prime is 401551. The reversal of 401547 is 745104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 401547 - 2³ = 401539 is a prime.

It is a super-2 number, since 2×401547² = 322479986418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78 + ... + 899.

It is an arithmetic number, because the mean of its divisors is an integer number (67482).

2⁴⁰¹⁵⁴⁷ is an apocalyptic number.

401547 is a deficient number, since it is larger than the sum of its proper divisors (138309).

401547 is a wasteful number, since it uses less digits than its factorization.

401547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 401547 is about 633.6773627012. The cubic root of 401547 is about 73.7754943938.

The spelling of 401547 in words is "four hundred one thousand, five hundred forty-seven".