51943455 has 12 divisors (see below), whose sum is σ = 90035400. Its totient is φ = 27703152.

The previous prime is 51943447. The next prime is 51943457. The reversal of 51943455 is 55434915.

It is not a de Polignac number, because 51943455 - 2³ = 51943447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51943457) 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, 577105 + ... + 577194.

It is an arithmetic number, because the mean of its divisors is an integer number (7502950).

Almost surely, 2^51943455 is an apocalyptic number.

51943455 is a deficient number, since it is larger than the sum of its proper divisors (38091945).

51943455 is a wasteful number, since it uses less digits than its factorization.

51943455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154310 (or 1154307 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 51943455 is about 7207.1807941802. The cubic root of 51943455 is about 373.1157750470.

It can be divided in two parts, 5194 and 3455, that added together give a square (8649 = 93²).

The spelling of 51943455 in words is "fifty-one million, nine hundred forty-three thousand, four hundred fifty-five".