1954531 has 2 divisors, whose sum is σ = 1954532. Its totient is φ = 1954530.

The previous prime is 1954523. The next prime is 1954543. The reversal of 1954531 is 1354591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1954531 - 2³ = 1954523 is a prime.

It is a super-2 number, since 2×1954531² = 7640382859922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1954531.

It is not a weakly prime, because it can be changed into another prime (1954231) 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 as a sum of consecutive naturals, namely, 977265 + 977266.

It is an arithmetic number, because the mean of its divisors is an integer number (977266).

2^1954531 is an apocalyptic number.

1954531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1954531 is an equidigital number, since it uses as much as digits as its factorization.

1954531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 28.

The square root of 1954531 is about 1398.0454212936. The cubic root of 1954531 is about 125.0299874721.

Adding to 1954531 its product of digits (2700), we get a triangular number (1957231 = T₁₉₇₈).

It can be divided in two parts, 1954 and 531, that added together give a triangular number (2485 = T₇₀).

The spelling of 1954531 in words is "one million, nine hundred fifty-four thousand, five hundred thirty-one".