155542406 has 8 divisors (see below), whose sum is σ = 233703624. Its totient is φ = 77641200.

The previous prime is 155542391. The next prime is 155542421. The reversal of 155542406 is 604245551.

It is an interprime number because it is at equal distance from previous prime (155542391) and next prime (155542421).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63500 + ... + 65903.

It is an arithmetic number, because the mean of its divisors is an integer number (29212953).

Almost surely, 2^155542406 is an apocalyptic number.

155542406 is a deficient number, since it is larger than the sum of its proper divisors (78161218).

155542406 is a wasteful number, since it uses less digits than its factorization.

155542406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130006.

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 155542406 is about 12471.6641231233. The cubic root of 155542406 is about 537.7943940552.

Adding to 155542406 its reverse (604245551), we get a palindrome (759787957).

The spelling of 155542406 in words is "one hundred fifty-five million, five hundred forty-two thousand, four hundred six".