2151601554 has 8 divisors (see below), whose sum is σ = 4303203120. Its totient is φ = 717200516.

The previous prime is 2151601547. The next prime is 2151601561. The reversal of 2151601554 is 4551061512.

It is an interprime number because it is at equal distance from previous prime (2151601547) and next prime (2151601561).

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

2151601554 is an admirable 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, 179300124 + ... + 179300135.

It is an arithmetic number, because the mean of its divisors is an integer number (537900390).

Almost surely, 2^2151601554 is an apocalyptic number.

2151601554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2151601554 is a wasteful number, since it uses less digits than its factorization.

2151601554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358600264.

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 2151601554 is about 46385.3592634573. The cubic root of 2151601554 is about 1290.9832765272.

The spelling of 2151601554 in words is "two billion, one hundred fifty-one million, six hundred one thousand, five hundred fifty-four".