253550043 has 12 divisors (see below), whose sum is σ = 371706088. Its totient is φ = 166510080.

The previous prime is 253550029. The next prime is 253550047. The reversal of 253550043 is 340055352.

It is not a de Polignac number, because 253550043 - 2⁶ = 253549979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253549989 and 253550016.

It is not an unprimeable number, because it can be changed into a prime (253550047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209638 + ... + 210843.

Almost surely, 2^253550043 is an apocalyptic number.

253550043 is a deficient number, since it is larger than the sum of its proper divisors (118156045).

253550043 is a wasteful number, since it uses less digits than its factorization.

253550043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420554 (or 420551 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 253550043 is about 15923.2547866320. The cubic root of 253550043 is about 632.9283702630.

The spelling of 253550043 in words is "two hundred fifty-three million, five hundred fifty thousand, forty-three".