12150557 has 8 divisors (see below), whose sum is σ = 12909600. Its totient is φ = 11403504.

The previous prime is 12150539. The next prime is 12150559. The reversal of 12150557 is 75505121.

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 12150557 - 2¹⁴ = 12134173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12150559) 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, 863 + ... + 5004.

It is an arithmetic number, because the mean of its divisors is an integer number (1613700).

Almost surely, 2^12150557 is an apocalyptic number.

It is an amenable number.

12150557 is a deficient number, since it is larger than the sum of its proper divisors (759043).

12150557 is a wasteful number, since it uses less digits than its factorization.

12150557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5995.

The product of its (nonzero) digits is 1750, while the sum is 26.

The square root of 12150557 is about 3485.7649088830. The cubic root of 12150557 is about 229.8963427043.

Adding to 12150557 its reverse (75505121), we get a palindrome (87655678).

The spelling of 12150557 in words is "twelve million, one hundred fifty thousand, five hundred fifty-seven".