51090543 has 12 divisors (see below), whose sum is σ = 84340048. Its totient is φ = 29194560.

The previous prime is 51090541. The next prime is 51090553. The reversal of 51090543 is 34509015.

It is not a de Polignac number, because 51090543 - 2¹ = 51090541 is a prime.

It is a super-2 number, since 2×51090543² = 5220487168069698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51090541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 405418 + ... + 405543.

Almost surely, 2^51090543 is an apocalyptic number.

51090543 is a deficient number, since it is larger than the sum of its proper divisors (33249505).

51090543 is a wasteful number, since it uses less digits than its factorization.

51090543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810974 (or 810971 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 51090543 is about 7147.7648954061. The cubic root of 51090543 is about 371.0623062387.

Adding to 51090543 its reverse (34509015), we get a palindrome (85599558).

The spelling of 51090543 in words is "fifty-one million, ninety thousand, five hundred forty-three".