155287630 has 8 divisors (see below), whose sum is σ = 279517752. Its totient is φ = 62115048.

The previous prime is 155287619. The next prime is 155287637. The reversal of 155287630 is 36782551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×155287630² = 48228496062033800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155287630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155287637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7764372 + ... + 7764391.

It is an arithmetic number, because the mean of its divisors is an integer number (34939719).

Almost surely, 2^155287630 is an apocalyptic number.

155287630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155287630 is a deficient number, since it is larger than the sum of its proper divisors (124230122).

155287630 is a wasteful number, since it uses less digits than its factorization.

155287630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15528770.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 155287630 is about 12461.4457427700. The cubic root of 155287630 is about 537.5006006844.

The spelling of 155287630 in words is "one hundred fifty-five million, two hundred eighty-seven thousand, six hundred thirty".