155010047 has 2 divisors, whose sum is σ = 155010048. Its totient is φ = 155010046.

The previous prime is 155010019. The next prime is 155010049. The reversal of 155010047 is 740010551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155010047 - 2¹² = 155005951 is a prime.

It is a super-2 number, since 2×155010047² = 48056229341884418, which contains 22 as substring.

Together with 155010049, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155010049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77505023 + 77505024.

It is an arithmetic number, because the mean of its divisors is an integer number (77505024).

Almost surely, 2^155010047 is an apocalyptic number.

155010047 is a deficient number, since it is larger than the sum of its proper divisors (1).

155010047 is an equidigital number, since it uses as much as digits as its factorization.

155010047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 155010047 is about 12450.3030886802. The cubic root of 155010047 is about 537.1801415497.

Adding to 155010047 its reverse (740010551), we get a palindrome (895020598).

The spelling of 155010047 in words is "one hundred fifty-five million, ten thousand, forty-seven".