203541145 has 16 divisors (see below), whose sum is σ = 260802432. Its totient is φ = 152127360.

The previous prime is 203541089. The next prime is 203541199. The reversal of 203541145 is 541145302.

It is a happy number.

It is not a de Polignac number, because 203541145 - 2¹⁷ = 203410073 is a prime.

It is a super-2 number, since 2×203541145² = 82857995415822050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15636 + ... + 25525.

It is an arithmetic number, because the mean of its divisors is an integer number (16300152).

Almost surely, 2^203541145 is an apocalyptic number.

It is an amenable number.

203541145 is a deficient number, since it is larger than the sum of its proper divisors (57261287).

203541145 is a wasteful number, since it uses less digits than its factorization.

203541145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41232.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 203541145 is about 14266.7846763032. The cubic root of 203541145 is about 588.2348324281.

Adding to 203541145 its reverse (541145302), we get a palindrome (744686447).

The spelling of 203541145 in words is "two hundred three million, five hundred forty-one thousand, one hundred forty-five".