53145371 has 16 divisors (see below), whose sum is σ = 56700000. Its totient is φ = 49733376.

The previous prime is 53145361. The next prime is 53145373. The reversal of 53145371 is 17354135.

53145371 = 203² + 204² + ... + 551².

It is a de Polignac number, because none of the positive numbers 2^k-53145371 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53145373) 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, 152105 + ... + 152453.

It is an arithmetic number, because the mean of its divisors is an integer number (3543750).

Almost surely, 2^53145371 is an apocalyptic number.

53145371 is a deficient number, since it is larger than the sum of its proper divisors (3554629).

53145371 is a wasteful number, since it uses less digits than its factorization.

53145371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526.

The product of its digits is 6300, while the sum is 29.

The square root of 53145371 is about 7290.0871736900. The cubic root of 53145371 is about 375.9716927346.

The spelling of 53145371 in words is "fifty-three million, one hundred forty-five thousand, three hundred seventy-one".