1151213501 has 8 divisors (see below), whose sum is σ = 1178469600. Its totient is φ = 1123979472.

The previous prime is 1151213491. The next prime is 1151213507. The reversal of 1151213501 is 1053121511.

It is a happy number.

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 1151213501 - 2³⁰ = 77471677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151213507) 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, 152975 + ... + 160323.

It is an arithmetic number, because the mean of its divisors is an integer number (147308700).

Almost surely, 2^1151213501 is an apocalyptic number.

It is an amenable number.

1151213501 is a deficient number, since it is larger than the sum of its proper divisors (27256099).

1151213501 is an equidigital number, since it uses as much as digits as its factorization.

1151213501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11035.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 1151213501 is about 33929.5372942220. The cubic root of 1151213501 is about 1048.0579373429.

The spelling of 1151213501 in words is "one billion, one hundred fifty-one million, two hundred thirteen thousand, five hundred one".