155653446 has 64 divisors (see below), whose sum is σ = 344736000. Its totient is φ = 46559616.

The previous prime is 155653441. The next prime is 155653481. The reversal of 155653446 is 644356551.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155653441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 685585 + ... + 685811.

It is an arithmetic number, because the mean of its divisors is an integer number (5386500).

Almost surely, 2^155653446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155653446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172368000).

155653446 is an abundant number, since it is smaller than the sum of its proper divisors (189082554).

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

155653446 is a wasteful number, since it uses less digits than its factorization.

155653446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453.

The product of its digits is 216000, while the sum is 39.

The square root of 155653446 is about 12476.1150203098. The cubic root of 155653446 is about 537.9223387667.

The spelling of 155653446 in words is "one hundred fifty-five million, six hundred fifty-three thousand, four hundred forty-six".