50161553 has 4 divisors (see below), whose sum is σ = 54020148. Its totient is φ = 46302960.

The previous prime is 50161547. The next prime is 50161567. The reversal of 50161553 is 35516105.

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 14077504 + 36084049 = 3752^2 + 6007^2 .

It is a cyclic number.

It is not a de Polignac number, because 50161553 - 2⁴ = 50161537 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50161253) 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, 1929278 + ... + 1929303.

It is an arithmetic number, because the mean of its divisors is an integer number (13505037).

Almost surely, 2^50161553 is an apocalyptic number.

It is an amenable number.

50161553 is a deficient number, since it is larger than the sum of its proper divisors (3858595).

50161553 is a wasteful number, since it uses less digits than its factorization.

50161553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3858594.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 50161553 is about 7082.4821214035. The cubic root of 50161553 is about 368.7995008526.

Adding to 50161553 its reverse (35516105), we get a palindrome (85677658).

The spelling of 50161553 in words is "fifty million, one hundred sixty-one thousand, five hundred fifty-three".