12057551 has 4 divisors (see below), whose sum is σ = 13153704. Its totient is φ = 10961400.

The previous prime is 12057547. The next prime is 12057583. The reversal of 12057551 is 15575021.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12057551 - 2² = 12057547 is a prime.

It is a super-2 number, since 2×12057551² = 290769072235202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12057551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12057541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548060 + ... + 548081.

It is an arithmetic number, because the mean of its divisors is an integer number (3288426).

Almost surely, 2^12057551 is an apocalyptic number.

12057551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12057551 is a deficient number, since it is larger than the sum of its proper divisors (1096153).

12057551 is a wasteful number, since it uses less digits than its factorization.

12057551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096152.

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

The square root of 12057551 is about 3472.3984506390. The cubic root of 12057551 is about 229.3082619086.

The spelling of 12057551 in words is "twelve million, fifty-seven thousand, five hundred fifty-one".