155249424 has 60 divisors (see below), whose sum is σ = 473986032. Its totient is φ = 47044800.

The previous prime is 155249417. The next prime is 155249429. The reversal of 155249424 is 424942551.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (155249429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47422 + ... + 50589.

Almost surely, 2^155249424 is an apocalyptic number.

It is an amenable number.

155249424 is an abundant number, since it is smaller than the sum of its proper divisors (318736608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155249424 is a wasteful number, since it uses less digits than its factorization.

155249424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98036 (or 98027 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 155249424 is about 12459.9126802719. The cubic root of 155249424 is about 537.4565159702.

The spelling of 155249424 in words is "one hundred fifty-five million, two hundred forty-nine thousand, four hundred twenty-four".