11957145 has 8 divisors (see below), whose sum is σ = 19131456. Its totient is φ = 6377136.

The previous prime is 11957131. The next prime is 11957147. The reversal of 11957145 is 54175911.

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

It is not a de Polignac number, because 11957145 - 2¹⁰ = 11956121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11957147) 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, 398557 + ... + 398586.

It is an arithmetic number, because the mean of its divisors is an integer number (2391432).

Almost surely, 2^11957145 is an apocalyptic number.

11957145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11957145 is a deficient number, since it is larger than the sum of its proper divisors (7174311).

11957145 is an equidigital number, since it uses as much as digits as its factorization.

11957145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797151.

The product of its digits is 6300, while the sum is 33.

The square root of 11957145 is about 3457.9104962390. The cubic root of 11957145 is about 228.6699860498.

The spelling of 11957145 in words is "eleven million, nine hundred fifty-seven thousand, one hundred forty-five".