1145245501 has 4 divisors (see below), whose sum is σ = 1205521600. Its totient is φ = 1084969404.

The previous prime is 1145245499. The next prime is 1145245547. The reversal of 1145245501 is 1055425411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1145245501 - 2¹ = 1145245499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1145245501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145245901) 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, 30138021 + ... + 30138058.

It is an arithmetic number, because the mean of its divisors is an integer number (301380400).

Almost surely, 2^1145245501 is an apocalyptic number.

It is an amenable number.

1145245501 is a deficient number, since it is larger than the sum of its proper divisors (60276099).

1145245501 is an equidigital number, since it uses as much as digits as its factorization.

1145245501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60276098.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 1145245501 is about 33841.4760464138. The cubic root of 1145245501 is about 1046.2437214421.

It can be divided in two parts, 11452 and 45501, that added together give a triangular number (56953 = T₃₃₇).

The spelling of 1145245501 in words is "one billion, one hundred forty-five million, two hundred forty-five thousand, five hundred one".