1543955 has 16 divisors (see below), whose sum is σ = 2187264. Its totient is φ = 1023840.

The previous prime is 1543951. The next prime is 1543961. The reversal of 1543955 is 5593451.

It is not a de Polignac number, because 1543955 - 2² = 1543951 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1543951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 374 + ... + 1796.

It is an arithmetic number, because the mean of its divisors is an integer number (136704).

2^1543955 is an apocalyptic number.

1543955 is a deficient number, since it is larger than the sum of its proper divisors (643309).

1543955 is a wasteful number, since it uses less digits than its factorization.

1543955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466.

The product of its digits is 13500, while the sum is 32.

The square root of 1543955 is about 1242.5598577131. The cubic root of 1543955 is about 115.5788084301.

The spelling of 1543955 in words is "one million, five hundred forty-three thousand, nine hundred fifty-five".