155223533 has 2 divisors, whose sum is σ = 155223534. Its totient is φ = 155223532.

The previous prime is 155223517. The next prime is 155223587. The reversal of 155223533 is 335322551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85784644 + 69438889 = 9262^2 + 8333^2 .

It is a cyclic number.

It is not a de Polignac number, because 155223533 - 2⁴ = 155223517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155223496 and 155223505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155223503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77611766 + 77611767.

It is an arithmetic number, because the mean of its divisors is an integer number (77611767).

Almost surely, 2^155223533 is an apocalyptic number.

It is an amenable number.

155223533 is a deficient number, since it is larger than the sum of its proper divisors (1).

155223533 is an equidigital number, since it uses as much as digits as its factorization.

155223533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13500, while the sum is 29.

The square root of 155223533 is about 12458.8736649827. The cubic root of 155223533 is about 537.4266370397.

The spelling of 155223533 in words is "one hundred fifty-five million, two hundred twenty-three thousand, five hundred thirty-three".