1145532651 has 4 divisors (see below), whose sum is σ = 1527376872. Its totient is φ = 763688432.

The previous prime is 1145532649. The next prime is 1145532671. The reversal of 1145532651 is 1562355411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1562355411 = 3 ⋅520785137.

It is a cyclic number.

It is not a de Polignac number, because 1145532651 - 2¹ = 1145532649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1145532611) 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, 190922106 + ... + 190922111.

It is an arithmetic number, because the mean of its divisors is an integer number (381844218).

Almost surely, 2^1145532651 is an apocalyptic number.

1145532651 is a deficient number, since it is larger than the sum of its proper divisors (381844221).

1145532651 is an equidigital number, since it uses as much as digits as its factorization.

1145532651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381844220.

The product of its digits is 18000, while the sum is 33.

The square root of 1145532651 is about 33845.7183555025. The cubic root of 1145532651 is about 1046.3311564880.

The spelling of 1145532651 in words is "one billion, one hundred forty-five million, five hundred thirty-two thousand, six hundred fifty-one".