11897851 has 8 divisors (see below), whose sum is σ = 13646304. Its totient is φ = 10161600.

The previous prime is 11897849. The next prime is 11897861. The reversal of 11897851 is 15879811.

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 11897851 - 2¹ = 11897849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11897861) 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, 850 + ... + 4951.

It is an arithmetic number, because the mean of its divisors is an integer number (1705788).

Almost surely, 2^11897851 is an apocalyptic number.

11897851 is a deficient number, since it is larger than the sum of its proper divisors (1748453).

11897851 is an equidigital number, since it uses as much as digits as its factorization.

11897851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6101.

The product of its digits is 20160, while the sum is 40.

The square root of 11897851 is about 3449.3261660794. The cubic root of 11897851 is about 228.2913774949.

It can be divided in two parts, 118 and 97851, that added together give a square (97969 = 313²).

The spelling of 11897851 in words is "eleven million, eight hundred ninety-seven thousand, eight hundred fifty-one".