155620102 has 16 divisors (see below), whose sum is σ = 260070912. Its totient is φ = 69230920.

The previous prime is 155620043. The next prime is 155620109. The reversal of 155620102 is 201026551.

It is a super-2 number, since 2×155620102² = 48435232292980808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155620109) 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 7 ways as a sum of consecutive naturals, for example, 74218 + ... + 76285.

It is an arithmetic number, because the mean of its divisors is an integer number (16254432).

Almost surely, 2^155620102 is an apocalyptic number.

155620102 is a deficient number, since it is larger than the sum of its proper divisors (104450810).

155620102 is a wasteful number, since it uses less digits than its factorization.

155620102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150563.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 155620102 is about 12474.7786353105. The cubic root of 155620102 is about 537.8839248760.

Adding to 155620102 its reverse (201026551), we get a palindrome (356646653).

The spelling of 155620102 in words is "one hundred fifty-five million, six hundred twenty thousand, one hundred two".