155620002 has 32 divisors (see below), whose sum is σ = 320910912. Its totient is φ = 50272704.

The previous prime is 155619979. The next prime is 155620007. The reversal of 155620002 is 200026551.

It is not an unprimeable number, because it can be changed into a prime (155620007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61588 + ... + 64064.

It is an arithmetic number, because the mean of its divisors is an integer number (10028466).

Almost surely, 2^155620002 is an apocalyptic number.

155620002 is an abundant number, since it is smaller than the sum of its proper divisors (165290910).

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

155620002 is a wasteful number, since it uses less digits than its factorization.

155620002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 155620002 is about 12474.7746272227. The cubic root of 155620002 is about 537.8838096630.

Adding to 155620002 its reverse (200026551), we get a palindrome (355646553).

The spelling of 155620002 in words is "one hundred fifty-five million, six hundred twenty thousand, two".