53125545 has 32 divisors (see below), whose sum is σ = 95001984. Its totient is φ = 25126400.

The previous prime is 53125543. The next prime is 53125591. The reversal of 53125545 is 54552135.

It is a happy number.

It is not a de Polignac number, because 53125545 - 2¹ = 53125543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53125543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2839 + ... + 10691.

It is an arithmetic number, because the mean of its divisors is an integer number (2968812).

Almost surely, 2^53125545 is an apocalyptic number.

53125545 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

53125545 is a deficient number, since it is larger than the sum of its proper divisors (41876439).

53125545 is a wasteful number, since it uses less digits than its factorization.

53125545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7913.

The product of its digits is 15000, while the sum is 30.

The square root of 53125545 is about 7288.7272551523. The cubic root of 53125545 is about 375.9249345583.

The spelling of 53125545 in words is "fifty-three million, one hundred twenty-five thousand, five hundred forty-five".