1401501505 has 8 divisors (see below), whose sum is σ = 1780731432. Its totient is φ = 1055248128.

The previous prime is 1401501499. The next prime is 1401501509. The reversal of 1401501505 is 5051051041.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 96196864 + 1305304641 = 9808^2 + 36129^2 .

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 1401501505 - 2⁹ = 1401500993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401501509) 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, 8244042 + ... + 8244211.

It is an arithmetic number, because the mean of its divisors is an integer number (222591429).

Almost surely, 2^1401501505 is an apocalyptic number.

It is an amenable number.

1401501505 is a deficient number, since it is larger than the sum of its proper divisors (379229927).

1401501505 is a wasteful number, since it uses less digits than its factorization.

1401501505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16488275.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 1401501505 is about 37436.6331953075. The cubic root of 1401501505 is about 1119.0887318187.

Adding to 1401501505 its reverse (5051051041), we get a palindrome (6452552546).

The spelling of 1401501505 in words is "one billion, four hundred one million, five hundred one thousand, five hundred five".