201354257 has 4 divisors (see below), whose sum is σ = 216843060. Its totient is φ = 185865456.

The previous prime is 201354233. The next prime is 201354271. The reversal of 201354257 is 752453102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 752453102 = 2 ⋅376226551.

It can be written as a sum of positive squares in 2 ways, for example, as 102232321 + 99121936 = 10111^2 + 9956^2 .

It is a cyclic number.

It is not a de Polignac number, because 201354257 - 2⁶ = 201354193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201344257) 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, 7744382 + ... + 7744407.

It is an arithmetic number, because the mean of its divisors is an integer number (54210765).

Almost surely, 2^201354257 is an apocalyptic number.

It is an amenable number.

201354257 is a deficient number, since it is larger than the sum of its proper divisors (15488803).

201354257 is a wasteful number, since it uses less digits than its factorization.

201354257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15488802.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 201354257 is about 14189.9350597527. The cubic root of 201354257 is about 586.1205366944.

The spelling of 201354257 in words is "two hundred one million, three hundred fifty-four thousand, two hundred fifty-seven".