401246551 has 8 divisors (see below), whose sum is σ = 409046400. Its totient is φ = 393480120.

The previous prime is 401246519. The next prime is 401246557. The reversal of 401246551 is 155642104.

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 401246551 - 2⁵ = 401246519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401246557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16606 + ... + 32836.

It is an arithmetic number, because the mean of its divisors is an integer number (51130800).

Almost surely, 2^401246551 is an apocalyptic number.

401246551 is a deficient number, since it is larger than the sum of its proper divisors (7799849).

401246551 is a wasteful number, since it uses less digits than its factorization.

401246551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16709.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 401246551 is about 20031.1395332367. The cubic root of 401246551 is about 737.5708948797.

Adding to 401246551 its reverse (155642104), we get a palindrome (556888655).

The spelling of 401246551 in words is "four hundred one million, two hundred forty-six thousand, five hundred fifty-one".