155498047 has 2 divisors, whose sum is σ = 155498048. Its totient is φ = 155498046.

The previous prime is 155498011. The next prime is 155498053. The reversal of 155498047 is 740894551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155498047 - 2²³ = 147109439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155497994 and 155498012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155498647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77749023 + 77749024.

It is an arithmetic number, because the mean of its divisors is an integer number (77749024).

Almost surely, 2^155498047 is an apocalyptic number.

155498047 is a deficient number, since it is larger than the sum of its proper divisors (1).

155498047 is an equidigital number, since it uses as much as digits as its factorization.

155498047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 155498047 is about 12469.8856049284. The cubic root of 155498047 is about 537.7432648266.

The spelling of 155498047 in words is "one hundred fifty-five million, four hundred ninety-eight thousand, forty-seven".