1380501 has 12 divisors (see below), whose sum is σ = 2008812. Its totient is φ = 913536.

The previous prime is 1380499. The next prime is 1380517. The reversal of 1380501 is 1050831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 904401 + 476100 = 951^2 + 690^2 .

It is not a de Polignac number, because 1380501 - 2¹ = 1380499 is a prime.

It is a super-2 number, since 2×1380501² = 3811566022002, which contains 22 as substring.

1380501 is a lucky number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 925 + ... + 1901.

It is an arithmetic number, because the mean of its divisors is an integer number (167401).

2^1380501 is an apocalyptic number.

It is an amenable number.

1380501 is a deficient number, since it is larger than the sum of its proper divisors (628311).

1380501 is a wasteful number, since it uses less digits than its factorization.

1380501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140 (or 1137 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1380501 is about 1174.9472328577. The cubic root of 1380501 is about 111.3470995045.

It can be divided in two parts, 1380 and 501, that added together give a palindrome (1881).

The spelling of 1380501 in words is "one million, three hundred eighty thousand, five hundred one".