155258949 has 16 divisors (see below), whose sum is σ = 210431232. Its totient is φ = 101810688.

The previous prime is 155258927. The next prime is 155258959. The reversal of 155258949 is 949852551.

It is not a de Polignac number, because 155258949 - 2⁷ = 155258821 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 155258898 and 155258907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155258959) 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, 44772 + ... + 48114.

It is an arithmetic number, because the mean of its divisors is an integer number (13151952).

Almost surely, 2^155258949 is an apocalyptic number.

It is an amenable number.

155258949 is a deficient number, since it is larger than the sum of its proper divisors (55172283).

155258949 is a wasteful number, since it uses less digits than its factorization.

155258949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3596.

The product of its digits is 648000, while the sum is 48.

The square root of 155258949 is about 12460.2949002020. The cubic root of 155258949 is about 537.4675072480.

The spelling of 155258949 in words is "one hundred fifty-five million, two hundred fifty-eight thousand, nine hundred forty-nine".