155224894 has 8 divisors (see below), whose sum is σ = 254004408. Its totient is φ = 70556760.

The previous prime is 155224891. The next prime is 155224897. The reversal of 155224894 is 498422551.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (155224891) and next prime (155224897).

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

It is a super-2 number, since 2×155224894² = 48189535434622472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155224891) 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, 3527817 + ... + 3527860.

It is an arithmetic number, because the mean of its divisors is an integer number (31750551).

Almost surely, 2^155224894 is an apocalyptic number.

155224894 is a deficient number, since it is larger than the sum of its proper divisors (98779514).

155224894 is a wasteful number, since it uses less digits than its factorization.

155224894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7055690.

The product of its digits is 115200, while the sum is 40.

The square root of 155224894 is about 12458.9282845677. The cubic root of 155224894 is about 537.4282077541.

The spelling of 155224894 in words is "one hundred fifty-five million, two hundred twenty-four thousand, eight hundred ninety-four".