53530645 has 32 divisors (see below), whose sum is σ = 76677120. Its totient is φ = 35104320.

The previous prime is 53530639. The next prime is 53530651. The reversal of 53530645 is 54603535.

It is an interprime number because it is at equal distance from previous prime (53530639) and next prime (53530651).

It is a de Polignac number, because none of the positive numbers 2^k-53530645 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111516 + ... + 111994.

It is an arithmetic number, because the mean of its divisors is an integer number (2396160).

Almost surely, 2^53530645 is an apocalyptic number.

It is an amenable number.

53530645 is a deficient number, since it is larger than the sum of its proper divisors (23146475).

53530645 is a wasteful number, since it uses less digits than its factorization.

53530645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625.

The product of its (nonzero) digits is 27000, while the sum is 31.

The square root of 53530645 is about 7316.4639683388. The cubic root of 53530645 is about 376.8780337518.

The spelling of 53530645 in words is "fifty-three million, five hundred thirty thousand, six hundred forty-five".