53078945 has 4 divisors (see below), whose sum is σ = 63694740. Its totient is φ = 42463152.

The previous prime is 53078891. The next prime is 53078953. The reversal of 53078945 is 54987035.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54987035 = 5 ⋅10997407.

It can be written as a sum of positive squares in 2 ways, for example, as 42003361 + 11075584 = 6481^2 + 3328^2 .

It is a cyclic number.

It is not a de Polignac number, because 53078945 - 2⁸ = 53078689 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5307890 + ... + 5307899.

It is an arithmetic number, because the mean of its divisors is an integer number (15923685).

Almost surely, 2^53078945 is an apocalyptic number.

It is an amenable number.

53078945 is a deficient number, since it is larger than the sum of its proper divisors (10615795).

53078945 is a wasteful number, since it uses less digits than its factorization.

53078945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10615794.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 53078945 is about 7285.5298366008. The cubic root of 53078945 is about 375.8149860295.

The spelling of 53078945 in words is "fifty-three million, seventy-eight thousand, nine hundred forty-five".