152205491 has 2 divisors, whose sum is σ = 152205492. Its totient is φ = 152205490.

The previous prime is 152205451. The next prime is 152205517. The reversal of 152205491 is 194502251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 152205491 - 2¹⁰ = 152204467 is a prime.

It is a super-2 number, since 2×152205491² = 46333022981102162, which contains 22 as substring.

It is equal to p_8561261 and since 152205491 and 8561261 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (152205401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76102745 + 76102746.

It is an arithmetic number, because the mean of its divisors is an integer number (76102746).

Almost surely, 2^152205491 is an apocalyptic number.

152205491 is a deficient number, since it is larger than the sum of its proper divisors (1).

152205491 is an equidigital number, since it uses as much as digits as its factorization.

152205491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 152205491 is about 12337.1589517198. The cubic root of 152205491 is about 533.9207181694.

The spelling of 152205491 in words is "one hundred fifty-two million, two hundred five thousand, four hundred ninety-one".