55712212 has 12 divisors (see below), whose sum is σ = 97565076. Its totient is φ = 27836480.

The previous prime is 55712197. The next prime is 55712227. The reversal of 55712212 is 21221755.

It is an interprime number because it is at equal distance from previous prime (55712197) and next prime (55712227).

It can be written as a sum of positive squares in 2 ways, for example, as 33016516 + 22695696 = 5746^2 + 4764^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2838 + ... + 10930.

It is an arithmetic number, because the mean of its divisors is an integer number (8130423).

Almost surely, 2^55712212 is an apocalyptic number.

It is an amenable number.

55712212 is a deficient number, since it is larger than the sum of its proper divisors (41852864).

55712212 is a wasteful number, since it uses less digits than its factorization.

55712212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9818 (or 9816 counting only the distinct ones).

The product of its digits is 1400, while the sum is 25.

The square root of 55712212 is about 7464.0613609482. The cubic root of 55712212 is about 381.9297313253.

Adding to 55712212 its reverse (21221755), we get a palindrome (76933967).

It can be divided in two parts, 557 and 12212, that added together give a square (12769 = 113²).

The spelling of 55712212 in words is "fifty-five million, seven hundred twelve thousand, two hundred twelve".