151621002 has 24 divisors (see below), whose sum is σ = 353782884. Its totient is φ = 46652544.

The previous prime is 151620983. The next prime is 151621021. The reversal of 151621002 is 200126151.

It is an interprime number because it is at equal distance from previous prime (151620983) and next prime (151621021).

It can be written as a sum of positive squares in 2 ways, for example, as 138509361 + 13111641 = 11769^2 + 3621^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 323743 + ... + 324210.

Almost surely, 2^151621002 is an apocalyptic number.

151621002 is an abundant number, since it is smaller than the sum of its proper divisors (202161882).

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

151621002 is a wasteful number, since it uses less digits than its factorization.

151621002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647974 (or 647971 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 151621002 is about 12313.4480142647. The cubic root of 151621002 is about 533.2363996576.

Adding to 151621002 its reverse (200126151), we get a palindrome (351747153).

The spelling of 151621002 in words is "one hundred fifty-one million, six hundred twenty-one thousand, two".