540435381 has 4 divisors (see below), whose sum is σ = 720580512. Its totient is φ = 360290252.

The previous prime is 540435293. The next prime is 540435383. The reversal of 540435381 is 183534045.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 540435381 - 2¹³ = 540427189 is a prime.

It is a super-2 number, since 2×540435381² = 584140802073230322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540435383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90072561 + ... + 90072566.

It is an arithmetic number, because the mean of its divisors is an integer number (180145128).

Almost surely, 2^540435381 is an apocalyptic number.

It is an amenable number.

540435381 is a deficient number, since it is larger than the sum of its proper divisors (180145131).

540435381 is a wasteful number, since it uses less digits than its factorization.

540435381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180145130.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 540435381 is about 23247.2660973285. The cubic root of 540435381 is about 814.5440791236.

The spelling of 540435381 in words is "five hundred forty million, four hundred thirty-five thousand, three hundred eighty-one".