253505601 has 6 divisors (see below), whose sum is σ = 366174770. Its totient is φ = 169003728.

The previous prime is 253505533. The next prime is 253505621. The reversal of 253505601 is 106505352.

253505601 is a `hidden beast` number, since 2 + 5 + 3 + 50 + 5 + 601 = 666.

It can be written as a sum of positive squares in only one way, i.e., 167961600 + 85544001 = 12960^2 + 9249^2 .

It is not a de Polignac number, because 253505601 - 2¹⁷ = 253374529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (253505621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14083636 + ... + 14083653.

Almost surely, 2^253505601 is an apocalyptic number.

It is an amenable number.

253505601 is a deficient number, since it is larger than the sum of its proper divisors (112669169).

253505601 is a wasteful number, since it uses less digits than its factorization.

253505601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28167295 (or 28167292 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 253505601 is about 15921.8592193249. The cubic root of 253505601 is about 632.8913884166.

The spelling of 253505601 in words is "two hundred fifty-three million, five hundred five thousand, six hundred one".