1400531 has 4 divisors (see below), whose sum is σ = 1527864. Its totient is φ = 1273200.

The previous prime is 1400527. The next prime is 1400543. The reversal of 1400531 is 1350041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1400531 - 2² = 1400527 is a prime.

It is a super-2 number, since 2×1400531² = 3922974163922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1400131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63650 + ... + 63671.

It is an arithmetic number, because the mean of its divisors is an integer number (381966).

2^1400531 is an apocalyptic number.

1400531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1400531 is a deficient number, since it is larger than the sum of its proper divisors (127333).

1400531 is a wasteful number, since it uses less digits than its factorization.

1400531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127332.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 1400531 is about 1183.4403238018. The cubic root of 1400531 is about 111.8830358449.

Adding to 1400531 its reverse (1350041), we get a palindrome (2750572).

The spelling of 1400531 in words is "one million, four hundred thousand, five hundred thirty-one".