2401555531 has 2 divisors, whose sum is σ = 2401555532. Its totient is φ = 2401555530.

The previous prime is 2401555517. The next prime is 2401555553. The reversal of 2401555531 is 1355551042.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2401555531 - 2²⁷ = 2267337803 is a prime.

It is a super-2 number, since 2×2401555531² = 11534937936953383922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2401555493 and 2401555502.

It is not a weakly prime, because it can be changed into another prime (2401555561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1200777765 + 1200777766.

It is an arithmetic number, because the mean of its divisors is an integer number (1200777766).

Almost surely, 2^2401555531 is an apocalyptic number.

2401555531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2401555531 is an equidigital number, since it uses as much as digits as its factorization.

2401555531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 2401555531 is about 49005.6683558137. The cubic root of 2401555531 is about 1339.1550942792.

The spelling of 2401555531 in words is "two billion, four hundred one million, five hundred fifty-five thousand, five hundred thirty-one".