53145554 has 32 divisors (see below), whose sum is σ = 99743616. Its totient is φ = 20632320.

The previous prime is 53145517. The next prime is 53145577. The reversal of 53145554 is 45554135.

Its product of digits (30000) is a multiple of the sum of its prime divisors (1250).

It is a self number, because there is not a number n which added to its sum of digits gives 53145554.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66284 + ... + 67080.

It is an arithmetic number, because the mean of its divisors is an integer number (3116988).

Almost surely, 2^53145554 is an apocalyptic number.

53145554 is a deficient number, since it is larger than the sum of its proper divisors (46598062).

53145554 is a wasteful number, since it uses less digits than its factorization.

53145554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250.

The product of its digits is 30000, while the sum is 32.

The square root of 53145554 is about 7290.0997249695. The cubic root of 53145554 is about 375.9721242726.

Adding to 53145554 its reverse (45554135), we get a palindrome (98699689).

The spelling of 53145554 in words is "fifty-three million, one hundred forty-five thousand, five hundred fifty-four".