146217556 has 6 divisors (see below), whose sum is σ = 255880730. Its totient is φ = 73108776.

The previous prime is 146217553. The next prime is 146217569. The reversal of 146217556 is 655712641.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 109202500 + 37015056 = 10450^2 + 6084^2 .

It is a super-2 number, since 2×146217556² = 42759147365226272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146217551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18277191 + ... + 18277198.

Almost surely, 2^146217556 is an apocalyptic number.

It is an amenable number.

146217556 is a deficient number, since it is larger than the sum of its proper divisors (109663174).

146217556 is a wasteful number, since it uses less digits than its factorization.

146217556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36554393 (or 36554391 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 146217556 is about 12092.0451537364. The cubic root of 146217556 is about 526.8251589080.

The spelling of 146217556 in words is "one hundred forty-six million, two hundred seventeen thousand, five hundred fifty-six".