51542453 has 16 divisors (see below), whose sum is σ = 56727216. Its totient is φ = 46632960.

The previous prime is 51542437. The next prime is 51542461. The reversal of 51542453 is 35424515.

It can be written as a sum of positive squares in 8 ways, for example, as 10608049 + 40934404 = 3257^2 + 6398^2 .

It is a cyclic number.

It is not a de Polignac number, because 51542453 - 2⁴ = 51542437 is a prime.

It is a super-2 number, since 2×51542453² = 5313248922514418, 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 (51542473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50375 + ... + 51387.

It is an arithmetic number, because the mean of its divisors is an integer number (3545451).

Almost surely, 2^51542453 is an apocalyptic number.

It is an amenable number.

51542453 is a deficient number, since it is larger than the sum of its proper divisors (5184763).

51542453 is a wasteful number, since it uses less digits than its factorization.

51542453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144.

The product of its digits is 12000, while the sum is 29.

The square root of 51542453 is about 7179.3072785611. The cubic root of 51542453 is about 372.1531458890.

Adding to 51542453 its reverse (35424515), we get a palindrome (86966968).

The spelling of 51542453 in words is "fifty-one million, five hundred forty-two thousand, four hundred fifty-three".