401652507 has 16 divisors (see below), whose sum is σ = 538775552. Its totient is φ = 266155200.

The previous prime is 401652499. The next prime is 401652527. The reversal of 401652507 is 705256104.

It is not a de Polignac number, because 401652507 - 2³ = 401652499 is a prime.

It is a super-2 number, since 2×401652507² = 322649472758770098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401652527) 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, 661398 + ... + 662004.

It is an arithmetic number, because the mean of its divisors is an integer number (33673472).

Almost surely, 2^401652507 is an apocalyptic number.

401652507 is a deficient number, since it is larger than the sum of its proper divisors (137123045).

401652507 is a wasteful number, since it uses less digits than its factorization.

401652507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 401652507 is about 20041.2700944825. The cubic root of 401652507 is about 737.8195536387.

The spelling of 401652507 in words is "four hundred one million, six hundred fifty-two thousand, five hundred seven".