155722132 has 6 divisors (see below), whose sum is σ = 272513738. Its totient is φ = 77861064.

The previous prime is 155722111. The next prime is 155722153. The reversal of 155722132 is 231227551.

It is an interprime number because it is at equal distance from previous prime (155722111) and next prime (155722153).

It can be written as a sum of positive squares in only one way, i.e., 130782096 + 24940036 = 11436^2 + 4994^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 155722132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19465263 + ... + 19465270.

Almost surely, 2^155722132 is an apocalyptic number.

It is an amenable number.

155722132 is a deficient number, since it is larger than the sum of its proper divisors (116791606).

155722132 is a wasteful number, since it uses less digits than its factorization.

155722132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38930537 (or 38930535 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The square root of 155722132 is about 12478.8674165567. The cubic root of 155722132 is about 538.0014510540.

Adding to 155722132 its reverse (231227551), we get a palindrome (386949683).

The spelling of 155722132 in words is "one hundred fifty-five million, seven hundred twenty-two thousand, one hundred thirty-two".