155218264 has 8 divisors (see below), whose sum is σ = 291034260. Its totient is φ = 77609128.

The previous prime is 155218253. The next prime is 155218267. The reversal of 155218264 is 462812551.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155218267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9701134 + ... + 9701149.

Almost surely, 2^155218264 is an apocalyptic number.

It is an amenable number.

155218264 is a deficient number, since it is larger than the sum of its proper divisors (135815996).

155218264 is a wasteful number, since it uses less digits than its factorization.

155218264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19402289 (or 19402285 counting only the distinct ones).

The product of its digits is 19200, while the sum is 34.

The square root of 155218264 is about 12458.6622074764. The cubic root of 155218264 is about 537.4205560610.

The spelling of 155218264 in words is "one hundred fifty-five million, two hundred eighteen thousand, two hundred sixty-four".