401651371 has 16 divisors (see below), whose sum is σ = 443938176. Its totient is φ = 360360000.

The previous prime is 401651311. The next prime is 401651377. The reversal of 401651371 is 173156104.

It is a de Polignac number, because none of the positive numbers 2^k-401651371 is a prime.

It is a super-2 number, since 2×401651371² = 322647647652359282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401651377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303391 + ... + 304711.

It is an arithmetic number, because the mean of its divisors is an integer number (27746136).

Almost surely, 2^401651371 is an apocalyptic number.

401651371 is a deficient number, since it is larger than the sum of its proper divisors (42286805).

401651371 is a wasteful number, since it uses less digits than its factorization.

401651371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 401651371 is about 20041.2417529453. The cubic root of 401651371 is about 737.8188580426.

The spelling of 401651371 in words is "four hundred one million, six hundred fifty-one thousand, three hundred seventy-one".