155863492 has 6 divisors (see below), whose sum is σ = 272761118. Its totient is φ = 77931744.

The previous prime is 155863457. The next prime is 155863493. The reversal of 155863492 is 294368551.

It can be written as a sum of positive squares in only one way, i.e., 138674176 + 17189316 = 11776^2 + 4146^2 .

It is not an unprimeable number, because it can be changed into a prime (155863493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19482933 + ... + 19482940.

Almost surely, 2^155863492 is an apocalyptic number.

It is an amenable number.

155863492 is a deficient number, since it is larger than the sum of its proper divisors (116897626).

155863492 is a wasteful number, since it uses less digits than its factorization.

155863492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38965877 (or 38965875 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The square root of 155863492 is about 12484.5301072968. The cubic root of 155863492 is about 538.1641958165.

The spelling of 155863492 in words is "one hundred fifty-five million, eight hundred sixty-three thousand, four hundred ninety-two".