53645051 has 4 divisors (see below), whose sum is σ = 53955312. Its totient is φ = 53334792.

The previous prime is 53645023. The next prime is 53645069. The reversal of 53645051 is 15054635.

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

It is a cyclic number.

It is not a de Polignac number, because 53645051 - 2²² = 49450747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53645021) 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, 154871 + ... + 155216.

It is an arithmetic number, because the mean of its divisors is an integer number (13488828).

Almost surely, 2^53645051 is an apocalyptic number.

53645051 is a deficient number, since it is larger than the sum of its proper divisors (310261).

53645051 is a wasteful number, since it uses less digits than its factorization.

53645051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310260.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 53645051 is about 7324.2781896921. The cubic root of 53645051 is about 377.1463313350.

Adding to 53645051 its reverse (15054635), we get a palindrome (68699686).

The spelling of 53645051 in words is "fifty-three million, six hundred forty-five thousand, fifty-one".