155136747 has 24 divisors (see below), whose sum is σ = 226892016. Its totient is φ = 93958144.

The previous prime is 155136719. The next prime is 155136749. The reversal of 155136747 is 747631551.

It is not a de Polignac number, because 155136747 - 2¹² = 155132651 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (155136749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41083 + ... + 44699.

It is an arithmetic number, because the mean of its divisors is an integer number (9453834).

Almost surely, 2^155136747 is an apocalyptic number.

155136747 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

155136747 is a deficient number, since it is larger than the sum of its proper divisors (71755269).

155136747 is a wasteful number, since it uses less digits than its factorization.

155136747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3695 (or 3666 counting only the distinct ones).

The product of its digits is 88200, while the sum is 39.

The square root of 155136747 is about 12455.3902789114. The cubic root of 155136747 is about 537.3264593533.

The spelling of 155136747 in words is "one hundred fifty-five million, one hundred thirty-six thousand, seven hundred forty-seven".