155748099 has 16 divisors (see below), whose sum is σ = 224243712. Its totient is φ = 95585568.

The previous prime is 155748097. The next prime is 155748121. The reversal of 155748099 is 990847551.

It is not a de Polignac number, because 155748099 - 2¹ = 155748097 is a prime.

It is a super-2 number, since 2×155748099² = 48514940684227602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155748091) 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, 9724 + ... + 20150.

It is an arithmetic number, because the mean of its divisors is an integer number (14015232).

Almost surely, 2^155748099 is an apocalyptic number.

155748099 is a deficient number, since it is larger than the sum of its proper divisors (68495613).

155748099 is a wasteful number, since it uses less digits than its factorization.

155748099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10826.

The product of its (nonzero) digits is 453600, while the sum is 48.

The square root of 155748099 is about 12479.9078121595. The cubic root of 155748099 is about 538.0313536911.

The spelling of 155748099 in words is "one hundred fifty-five million, seven hundred forty-eight thousand, ninety-nine".