53701649 has 4 divisors (see below), whose sum is σ = 55553460. Its totient is φ = 51849840.

The previous prime is 53701643. The next prime is 53701663. The reversal of 53701649 is 94610735.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44289025 + 9412624 = 6655^2 + 3068^2 .

It is a cyclic number.

It is not a de Polignac number, because 53701649 - 2⁴ = 53701633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53701643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925862 + ... + 925919.

It is an arithmetic number, because the mean of its divisors is an integer number (13888365).

Almost surely, 2^53701649 is an apocalyptic number.

It is an amenable number.

53701649 is a deficient number, since it is larger than the sum of its proper divisors (1851811).

53701649 is a wasteful number, since it uses less digits than its factorization.

53701649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851810.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 53701649 is about 7328.1408965712. The cubic root of 53701649 is about 377.2789203011.

The spelling of 53701649 in words is "fifty-three million, seven hundred one thousand, six hundred forty-nine".