1052252491 has 8 divisors (see below), whose sum is σ = 1059416064. Its totient is φ = 1045113000.

The previous prime is 1052252489. The next prime is 1052252521. The reversal of 1052252491 is 1942522501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1052252491 - 2¹ = 1052252489 is a prime.

It is a super-2 number, since 2×1052252491² = 2214470609631410162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1052252401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86406 + ... + 97828.

It is an arithmetic number, because the mean of its divisors is an integer number (132427008).

Almost surely, 2^1052252491 is an apocalyptic number.

1052252491 is a deficient number, since it is larger than the sum of its proper divisors (7163573).

1052252491 is a wasteful number, since it uses less digits than its factorization.

1052252491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12041.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 1052252491 is about 32438.4415624425. The cubic root of 1052252491 is about 1017.1226388724.

Adding to 1052252491 its reverse (1942522501), we get a palindrome (2994774992).

The spelling of 1052252491 in words is "one billion, fifty-two million, two hundred fifty-two thousand, four hundred ninety-one".