11551642 has 4 divisors (see below), whose sum is σ = 17327466. Its totient is φ = 5775820.

The previous prime is 11551609. The next prime is 11551643. The reversal of 11551642 is 24615511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8520561 + 3031081 = 2919^2 + 1741^2 .

It is not an unprimeable number, because it can be changed into a prime (11551643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2887909 + ... + 2887912.

Almost surely, 2^11551642 is an apocalyptic number.

11551642 is a deficient number, since it is larger than the sum of its proper divisors (5775824).

11551642 is an equidigital number, since it uses as much as digits as its factorization.

11551642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5775823.

The product of its digits is 1200, while the sum is 25.

The square root of 11551642 is about 3398.7706601064. The cubic root of 11551642 is about 226.0552374966.

The spelling of 11551642 in words is "eleven million, five hundred fifty-one thousand, six hundred forty-two".