152403509 has 2 divisors, whose sum is σ = 152403510. Its totient is φ = 152403508.

The previous prime is 152403491. The next prime is 152403523. The reversal of 152403509 is 905304251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80102500 + 72301009 = 8950^2 + 8503^2 .

It is a cyclic number.

It is not a de Polignac number, because 152403509 - 2¹² = 152399413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (152403529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76201754 + 76201755.

It is an arithmetic number, because the mean of its divisors is an integer number (76201755).

Almost surely, 2^152403509 is an apocalyptic number.

It is an amenable number.

152403509 is a deficient number, since it is larger than the sum of its proper divisors (1).

152403509 is an equidigital number, since it uses as much as digits as its factorization.

152403509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 152403509 is about 12345.1816106528. The cubic root of 152403509 is about 534.1521598774.

The spelling of 152403509 in words is "one hundred fifty-two million, four hundred three thousand, five hundred nine".