1401543052 has 24 divisors (see below), whose sum is σ = 3018708896. Its totient is φ = 554456448.

The previous prime is 1401543023. The next prime is 1401543071. The reversal of 1401543052 is 2503451041.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1924833 + ... + 1925560.

Almost surely, 2^1401543052 is an apocalyptic number.

It is an amenable number.

1401543052 is an abundant number, since it is smaller than the sum of its proper divisors (1617165844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1401543052 is a wasteful number, since it uses less digits than its factorization.

1401543052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3850417 (or 3850415 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1401543052 is about 37437.1880888509. The cubic root of 1401543052 is about 1119.0997900349.

Adding to 1401543052 its reverse (2503451041), we get a palindrome (3904994093).

The spelling of 1401543052 in words is "one billion, four hundred one million, five hundred forty-three thousand, fifty-two".