52149091 has 4 divisors (see below), whose sum is σ = 54893800. Its totient is φ = 49404384.

The previous prime is 52149061. The next prime is 52149101. The reversal of 52149091 is 19094125.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52149091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52149061) 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, 1372326 + ... + 1372363.

It is an arithmetic number, because the mean of its divisors is an integer number (13723450).

Almost surely, 2^52149091 is an apocalyptic number.

52149091 is a deficient number, since it is larger than the sum of its proper divisors (2744709).

52149091 is a wasteful number, since it uses less digits than its factorization.

52149091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2744708.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 52149091 is about 7221.4327525776. The cubic root of 52149091 is about 373.6074956999.

It can be divided in two parts, 5214 and 9091, that multiplied together give a palindrome (47400474).

The spelling of 52149091 in words is "fifty-two million, one hundred forty-nine thousand, ninety-one".