155020492 has 24 divisors (see below), whose sum is σ = 297238032. Its totient is φ = 70156800.

The previous prime is 155020469. The next prime is 155020499. The reversal of 155020492 is 294020551.

It is a self number, because there is not a number n which added to its sum of digits gives 155020492.

It is not an unprimeable number, because it can be changed into a prime (155020499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2692 + ... + 17812.

It is an arithmetic number, because the mean of its divisors is an integer number (12384918).

Almost surely, 2^155020492 is an apocalyptic number.

It is an amenable number.

155020492 is a deficient number, since it is larger than the sum of its proper divisors (142217540).

155020492 is a wasteful number, since it uses less digits than its factorization.

155020492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15369 (or 15367 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 155020492 is about 12450.7225493142. The cubic root of 155020492 is about 537.1922068333.

The spelling of 155020492 in words is "one hundred fifty-five million, twenty thousand, four hundred ninety-two".