155123007 has 16 divisors (see below), whose sum is σ = 224501760. Its totient is φ = 94705632.

The previous prime is 155122993. The next prime is 155123021. The reversal of 155123007 is 700321551.

It is an interprime number because it is at equal distance from previous prime (155122993) and next prime (155123021).

It is not a de Polignac number, because 155123007 - 2¹⁵ = 155090239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155123207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10707 + ... + 20612.

It is an arithmetic number, because the mean of its divisors is an integer number (14031360).

Almost surely, 2^155123007 is an apocalyptic number.

155123007 is a deficient number, since it is larger than the sum of its proper divisors (69378753).

155123007 is a wasteful number, since it uses less digits than its factorization.

155123007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31462.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 155123007 is about 12454.8386982731. The cubic root of 155123007 is about 537.3105957498.

Adding to 155123007 its reverse (700321551), we get a palindrome (855444558).

The spelling of 155123007 in words is "one hundred fifty-five million, one hundred twenty-three thousand, seven".