53678745 has 24 divisors (see below), whose sum is σ = 93467400. Its totient is φ = 28498176.

The previous prime is 53678689. The next prime is 53678761. The reversal of 53678745 is 54787635.

53678745 is a `hidden beast` number, since 536 + 78 + 7 + 45 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 33212169 + 20466576 = 5763^2 + 4524^2 .

It is not a de Polignac number, because 53678745 - 2¹¹ = 53676697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 53678745.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7701 + ... + 12909.

It is an arithmetic number, because the mean of its divisors is an integer number (3894475).

Almost surely, 2^53678745 is an apocalyptic number.

It is an amenable number.

53678745 is a deficient number, since it is larger than the sum of its proper divisors (39788655).

53678745 is a wasteful number, since it uses less digits than its factorization.

53678745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449 (or 5446 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 53678745 is about 7326.5779870278. The cubic root of 53678745 is about 377.2252756096.

The spelling of 53678745 in words is "fifty-three million, six hundred seventy-eight thousand, seven hundred forty-five".