161203053 has 32 divisors (see below), whose sum is σ = 241805952. Its totient is φ = 94694400.

The previous prime is 161203037. The next prime is 161203073. The reversal of 161203053 is 350302161.

It is not a de Polignac number, because 161203053 - 2⁴ = 161203037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161203073) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146401 + ... + 147497.

It is an arithmetic number, because the mean of its divisors is an integer number (7556436).

Almost surely, 2^161203053 is an apocalyptic number.

It is an amenable number.

161203053 is a deficient number, since it is larger than the sum of its proper divisors (80602899).

161203053 is a wasteful number, since it uses less digits than its factorization.

161203053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 161203053 is about 12696.5764283133. The cubic root of 161203053 is about 544.2407889586.

The spelling of 161203053 in words is "one hundred sixty-one million, two hundred three thousand, fifty-three".