201517054 has 4 divisors (see below), whose sum is σ = 302275584. Its totient is φ = 100758526.

The previous prime is 201517051. The next prime is 201517061. The reversal of 201517054 is 450715102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 450715102 = 2 ⋅225357551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201517051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50379262 + ... + 50379265.

It is an arithmetic number, because the mean of its divisors is an integer number (75568896).

Almost surely, 2^201517054 is an apocalyptic number.

201517054 is a deficient number, since it is larger than the sum of its proper divisors (100758530).

201517054 is a wasteful number, since it uses less digits than its factorization.

201517054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100758529.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 201517054 is about 14195.6702553983. The cubic root of 201517054 is about 586.2784556483.

The spelling of 201517054 in words is "two hundred one million, five hundred seventeen thousand, fifty-four".