155455007 has 2 divisors, whose sum is σ = 155455008. Its totient is φ = 155455006.

The previous prime is 155454983. The next prime is 155455009. The reversal of 155455007 is 700554551.

It is a strong prime.

It is an emirp because it is prime and its reverse (700554551) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155455007 is a prime.

Together with 155455009, 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 (155455009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77727503 + 77727504.

It is an arithmetic number, because the mean of its divisors is an integer number (77727504).

Almost surely, 2^155455007 is an apocalyptic number.

155455007 is a deficient number, since it is larger than the sum of its proper divisors (1).

155455007 is an equidigital number, since it uses as much as digits as its factorization.

155455007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17500, while the sum is 32.

The square root of 155455007 is about 12468.1597278829. The cubic root of 155455007 is about 537.6936466133.

The spelling of 155455007 in words is "one hundred fifty-five million, four hundred fifty-five thousand, seven".