155212464 has 80 divisors (see below), whose sum is σ = 456470784. Its totient is φ = 44985600.

The previous prime is 155212459. The next prime is 155212469. The reversal of 155212464 is 464212551.

It is an interprime number because it is at equal distance from previous prime (155212459) and next prime (155212469).

It is not an unprimeable number, because it can be changed into a prime (155212469) 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, 5754 + ... + 18534.

Almost surely, 2^155212464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155212464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228235392).

155212464 is an abundant number, since it is smaller than the sum of its proper divisors (301258320).

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

155212464 is a wasteful number, since it uses less digits than its factorization.

155212464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12826 (or 12820 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 155212464 is about 12458.4294355268. The cubic root of 155212464 is about 537.4138620935.

The spelling of 155212464 in words is "one hundred fifty-five million, two hundred twelve thousand, four hundred sixty-four".