155325047 has 2 divisors, whose sum is σ = 155325048. Its totient is φ = 155325046.

The previous prime is 155325041. The next prime is 155325061. The reversal of 155325047 is 740523551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155325047 - 2⁴ = 155325031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155325041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77662523 + 77662524.

It is an arithmetic number, because the mean of its divisors is an integer number (77662524).

Almost surely, 2^155325047 is an apocalyptic number.

155325047 is a deficient number, since it is larger than the sum of its proper divisors (1).

155325047 is an equidigital number, since it uses as much as digits as its factorization.

155325047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 155325047 is about 12462.9469628977. The cubic root of 155325047 is about 537.5437679881.

Adding to 155325047 its reverse (740523551), we get a palindrome (895848598).

The spelling of 155325047 in words is "one hundred fifty-five million, three hundred twenty-five thousand, forty-seven".