561155212 has 6 divisors (see below), whose sum is σ = 982021628. Its totient is φ = 280577604.

The previous prime is 561155201. The next prime is 561155263. The reversal of 561155212 is 212551165.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70144398 + ... + 70144405.

Almost surely, 2^561155212 is an apocalyptic number.

It is an amenable number.

561155212 is a deficient number, since it is larger than the sum of its proper divisors (420866416).

561155212 is a wasteful number, since it uses less digits than its factorization.

561155212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140288807 (or 140288805 counting only the distinct ones).

The product of its digits is 3000, while the sum is 28.

The square root of 561155212 is about 23688.7148659441. The cubic root of 561155212 is about 824.8234514166.

The spelling of 561155212 in words is "five hundred sixty-one million, one hundred fifty-five thousand, two hundred twelve".