53143450 has 12 divisors (see below), whose sum is σ = 98846910. Its totient is φ = 21257360.

The previous prime is 53143439. The next prime is 53143463. The reversal of 53143450 is 5434135.

It can be written as a sum of positive squares in 3 ways, for example, as 37564641 + 15578809 = 6129^2 + 3947^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 531385 + ... + 531484.

Almost surely, 2^53143450 is an apocalyptic number.

53143450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

53143450 is a deficient number, since it is larger than the sum of its proper divisors (45703460).

53143450 is a wasteful number, since it uses less digits than its factorization.

53143450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062881 (or 1062876 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 53143450 is about 7289.9554182450. The cubic root of 53143450 is about 375.9671627050.

Adding to 53143450 its reverse (5434135), we get a palindrome (58577585).

The spelling of 53143450 in words is "fifty-three million, one hundred forty-three thousand, four hundred fifty".