1554340543 has 16 divisors (see below), whose sum is σ = 1875237120. Its totient is φ = 1258557696.

The previous prime is 1554340537. The next prime is 1554340559. The reversal of 1554340543 is 3450434551.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1554340543 is a prime.

It is a super-2 number, since 2×1554340543² = 4831949047227069698, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1554340499 and 1554340508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1554340523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30396 + ... + 63502.

It is an arithmetic number, because the mean of its divisors is an integer number (117202320).

Almost surely, 2^1554340543 is an apocalyptic number.

1554340543 is a deficient number, since it is larger than the sum of its proper divisors (320896577).

1554340543 is a wasteful number, since it uses less digits than its factorization.

1554340543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33486.

The product of its (nonzero) digits is 72000, while the sum is 34.

The square root of 1554340543 is about 39425.1257829319. The cubic root of 1554340543 is about 1158.3737971453.

The spelling of 1554340543 in words is "one billion, five hundred fifty-four million, three hundred forty thousand, five hundred forty-three".