1552171228 has 12 divisors (see below), whose sum is σ = 2720931192. Its totient is φ = 774762320.

The previous prime is 1552171183. The next prime is 1552171273. The reversal of 1552171228 is 8221712551.

It is an interprime number because it is at equal distance from previous prime (1552171183) and next prime (1552171273).

It is a junction number, because it is equal to n+sod(n) for n = 1552171193 and 1552171202.

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, 328183 + ... + 332878.

It is an arithmetic number, because the mean of its divisors is an integer number (226744266).

Almost surely, 2^1552171228 is an apocalyptic number.

It is an amenable number.

1552171228 is a deficient number, since it is larger than the sum of its proper divisors (1168759964).

1552171228 is a wasteful number, since it uses less digits than its factorization.

1552171228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661652 (or 661650 counting only the distinct ones).

The product of its digits is 11200, while the sum is 34.

The square root of 1552171228 is about 39397.6043434115. The cubic root of 1552171228 is about 1157.8346515454.

Adding to 1552171228 its reverse (8221712551), we get a palindrome (9773883779).

The spelling of 1552171228 in words is "one billion, five hundred fifty-two million, one hundred seventy-one thousand, two hundred twenty-eight".