401520541 has 8 divisors (see below), whose sum is σ = 411451040. Its totient is φ = 391617072.

The previous prime is 401520523. The next prime is 401520557. The reversal of 401520541 is 145025104.

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 401520541 - 2²¹ = 399423389 is a prime.

It is a super-2 number, since 2×401520541² = 322437489689865362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401520571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25150 + ... + 37888.

It is an arithmetic number, because the mean of its divisors is an integer number (51431380).

Almost surely, 2^401520541 is an apocalyptic number.

It is an amenable number.

401520541 is a deficient number, since it is larger than the sum of its proper divisors (9930499).

401520541 is a wasteful number, since it uses less digits than its factorization.

401520541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13515.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 401520541 is about 20037.9774677985. The cubic root of 401520541 is about 737.7387393702.

Adding to 401520541 its reverse (145025104), we get a palindrome (546545645).

The spelling of 401520541 in words is "four hundred one million, five hundred twenty thousand, five hundred forty-one".