53973543 has 8 divisors (see below), whose sum is σ = 77500528. Its totient is φ = 33214464.

The previous prime is 53973539. The next prime is 53973551. The reversal of 53973543 is 34537935.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53973543 - 2² = 53973539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1383937 = 53973543 / (5 + 3 + 9 + 7 + 3 + 5 + 4 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53973503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 691930 + ... + 692007.

It is an arithmetic number, because the mean of its divisors is an integer number (9687566).

Almost surely, 2^53973543 is an apocalyptic number.

53973543 is a deficient number, since it is larger than the sum of its proper divisors (23526985).

53973543 is a wasteful number, since it uses less digits than its factorization.

53973543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383953.

The product of its digits is 170100, while the sum is 39.

The square root of 53973543 is about 7346.6688369628. The cubic root of 53973543 is about 377.9145757526.

The spelling of 53973543 in words is "fifty-three million, nine hundred seventy-three thousand, five hundred forty-three".